PDF malware analysis — malicious · 9672a47014bde2b1

MALICIOUS

PDF

74.3 KB Created: 2021-05-09 22:14:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07

MD5: a7ffbbf672b8fd8e8b9912e7bfb9985e SHA-1: 9de3fafba677a3f5a20d32a655d06d7457ef8ebe SHA-256: 9672a47014bde2b11b457003b262ab30099e7ed1f6ecc100b8164a4a47c5b449

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links to disposable hosting and compromised CMS upload storage, suggesting an attempt to distribute malware. The document body, though heavily obfuscated, contains references to 'pdf converter to word pro apk', indicating a lure to download potentially harmful software.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 6

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.
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://alarcon-v.com/editor_upload_image/file/44645048497.pdf In PDF document text
- http://2girlstrippin.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083375d87aef---berif.pdfIn PDF document text
- http://compie.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160946d24d95a4---fegadiwosagesitura.pdfIn PDF document text
- http://cbelmira.com/wp-content/plugins/super-forms/uploads/php/files/gi6jevgah5c0tu9ehntm7hg421/konepafazajilofe.pdfIn PDF document text
- https://www.hungarianassociation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c8c887a2fa---45482237330.pdfIn PDF document text
- https://munord.com/wp-content/plugins/super-forms/uploads/php/files/235ce95747d1d381ca55e031f2369b5d/jaxiwot.pdfIn PDF document text
- https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607056513a44c---14862393147.pdfIn PDF document text
- https://www.northwoodmedical.ca/wp-content/plugins/super-forms/uploads/php/files/m0t056us6fghic621q1n558kdc/lawulatoxedewopulapodi.pdfIn PDF document text
- https://sidexsideaudio.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078f660c2d98---punuredeweb.pdfIn PDF document text
- https://maugli24.ru/wp-content/plugins/super-forms/uploads/php/files/6f9536910a5bd7a5e3d160f0e63f2c47/30172627127.pdfIn PDF document text
- https://directprocessors.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9042a59fd---7890898940.pdfIn PDF document text
- http://wakingbeauty.com/wp-content/plugins/formcraft/file-upload/server/content/files/160786074ebb00---xixazuwon.pdfIn PDF document text
- https://evenimentecastel.ro/wp-content/plugins/super-forms/uploads/php/files/50i0fp66led485rq1idngf9roi/gemitavawomivigofovu.pdfIn PDF document text
- http://sarahscupcakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160820d4b3a3dd---difegavofiraj.pdfIn PDF document text
- https://adsbudget.net/userfiles/file/zogalito.pdfIn PDF document text
- https://lightupalife.org.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1609654be305db---19586399491.pdfIn PDF document text
- https://carstenrath.com/wp-content/plugins/super-forms/uploads/php/files/7fq3cq6osi6231sqeahc7eblgv/52680887766.pdfIn PDF document text
- https://popcouncilinstitute.org/wp-content/plugins/super-forms/uploads/php/files/97c8a3ffc39ed5bc4c9e42ba2345a4d4/luwasuzusuruleti.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=pdf+converter+to+word+pro+apkPDF 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000dc55.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDC55	5156 bytes
SHA-256: `6c4c44e1afbd07756377f19115c9291a36a94cf38621aa752131558d99db1f80`
`font_01_sfnt_off0000ee09.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEE09	1924 bytes
SHA-256: `1e0bbb7769925a4d38fc7b9e1705b30669dc6fa22fe8653fe6de04191f94cc89`
`font_02_sfnt_off0000f743.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF743	10500 bytes
SHA-256: `e11026bc8085953b21d16ddba4c411bd607470fa7ec89988f2f151b98ef4067d`

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