PDF malware analysis — malicious · cc2d93fb346545ab

MALICIOUS

PDF

83.8 KB Created: 2021-07-06 18:54:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25

MD5: 4ec3411dab3f93d807481a31214707c6 SHA-1: 149af97913530572c347ab028cecb21a8abb3154 SHA-256: cc2d93fb346545ab4af03274dc2de753d152710f28316fead8c49f5cdea0d982

164 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, indicating a link farm or phishing lure. The ML classifier and ClamAV detection strongly suggest malicious intent. The presence of urgency language further supports a phishing or scam pretext.

Machine Learning

Nyx PDF Classifier malicious score 0.9766

Heuristics 7

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM

PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
Urgency / deadline lure low SE_URGENCY_LURE

Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
External URI info PDF_URI

PDF contains an external URL action
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL http://hotelsandmartin.cz/files/file/66847883644.pdf In PDF document text
- https://www.skyline-recruiting.com/wp-content/plugins/super-forms/uploads/php/files/e573f7c486ba8607571e5ee42c3dbd02/bexifimarufakiwuboto.pdfIn PDF document text
- https://menu2uplus.com/images/file/gibemifizesizobawinozavun.pdfIn PDF document text
- https://www.brunosistemi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075a92e8cc79---lisizinanejesodepolije.pdfIn PDF document text
- http://minhledtran.com/luutru/files/41180527509.pdfIn PDF document text
- http://adanateknikservis.web.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16075e2a9d115f---8414713731.pdfIn PDF document text
- http://wakingbeauty.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609552b74ea32---17007958713.pdfIn PDF document text
- http://metzpaintings.com/wp-content/plugins/formcraft/file-upload/server/content/files/160792de8c5bc6---xaxizepakixokevifezuf.pdfIn PDF document text
- http://starcity-vinhomes.vn/app/webroot/img/files/gisuwuvirejoxowu.pdfIn PDF document text
- https://fjordancv.info/wp-content/plugins/super-forms/uploads/php/files/dc0f96c40c12e0f7fe1d2e5d5fc071e4/64380498593.pdfIn PDF document text
- https://ivfnna.gr/wp-content/plugins/super-forms/uploads/php/files/909b81f1627e56910e15e944f95416fa/66693000324.pdfIn PDF document text
- https://atraba-holding.com/userfiles/file/powalonaduwotebesir.pdfIn PDF document text
- http://stalmont.eu/userfiles/file/sexezodi.pdfIn PDF document text
- http://jmestateplanning.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/77883770334.pdfIn PDF document text
- http://midiabyz.com/wp-content/plugins/super-forms/uploads/php/files/4535065e3cbfa7e21d290624bf811961/10684110783.pdfIn PDF document text
- http://agro-vostok.ru/userfiles/file/14931728636.pdfIn PDF document text
- http://stylist.in.ua/wp-content/plugins/formcraft/file-upload/server/content/files/160b71ef490352---35556136426.pdfIn PDF document text
- http://orderleesushi.com/uploads/files/51493219284.pdfIn PDF document text
- http://hani-bee.com/userfiles/files/77832614384.pdfIn PDF document text
- https://grahampropertytax.com/wp-content/plugins/super-forms/uploads/php/files/b1e13ebf3738efe89dd84f4213f30388/voladowexabixanokujinopos.pdfIn PDF document text
- http://stphilomenaonline.org/userfiles/file/29364191733.pdfIn PDF document text
- http://ildungrice.com/fileupload/fckeditor/file/83425943460.pdfIn PDF document text
- https://amd-export.com/site/upload/file/fiwijopumapupi.pdfIn PDF document text
- https://www.ideaklinikkadikoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160836348f2964---pukenotu.pdfIn PDF document text
- https://chamsocmuihong.com/wp-content/plugins/super-forms/uploads/php/files/5qarkobdho4dpsb6q05ornau2o/lipekojenu.pdfIn PDF document text
- https://eclipsetheaters.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c03c1a7e776---kujekowarawu.pdfIn PDF document text
- https://quickonboarding.com/wp-content/plugins/super-forms/uploads/php/files/701343ea1b6982dbe7749c492f50ea83/30746090012.pdfIn PDF document text
- http://digimaap.com/wp-content/plugins/super-forms/uploads/php/files/c60tfnoebtctu64ju3e6lau93o/86985937944.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=wordscapes+cheat+level+4980PDF link annotation
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000ce1d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCE1D	16864 bytes
SHA-256: `ee022d71caf8e1b9513face6acfda82abaa586e3a576f70ea4696f117ec1c2fa`
`font_01_sfnt_off0000f99f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF99F	16164 bytes
SHA-256: `3ebd486235ab6c407a74d98ab9e1cf09d7661342c8c98090703f1c8ee3396579`
`font_02_sfnt_off00010f0a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10F0A	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_03_sfnt_off00012721.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12721	11048 bytes
SHA-256: `835d2fdb8ca4ff2b11e71249a200093fa49c75d5cb0a98eeace38288268299ba`

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