PDF malware analysis — malicious · 5ade9b77f5594479

MALICIOUS

PDF

81.4 KB Created: 2021-08-26 06:32:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24

MD5: cf1ac7b8f6389b3b42779912d9664188 SHA-1: 20389089b570d78b4338e0491dffaea4dd7d2c89 SHA-256: 5ade9b77f5594479725a037b039767699fb67b71b8f7622cdac5a9fcc60ac0c7

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous links to external websites, many hosted on compromised CMS uploads, suggesting a phishing or malware distribution scheme. The presence of PDF link farm heuristics further supports this, indicating the document is designed to redirect users to potentially harmful sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9917

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 https://bf-pomosch.ru/wp-content/plugins/super-forms/uploads/php/files/5hv7eugkoubutl43uue8390hi7/nabumowul.pdf In PDF document text
- https://reifenscho.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606c7bbed8e73---34358745268.pdfIn PDF document text
- http://top1np.com/ckfinder/userfiles/files/71601246298.pdfIn PDF document text
- https://cremeconferences.com/wp-content/plugins/super-forms/uploads/php/files/559f57d3fda6ea6b2f6550acd1578989/12674193147.pdfIn PDF document text
- https://nikosdimos.gr/userfiles/file/kunapulamologetezitaxis.pdfIn PDF document text
- http://mobydick-band.de/fckdata/file/71087657626.pdfIn PDF document text
- https://csom.cz/wp-content/plugins/super-forms/uploads/php/files/dae9149d7279c63c89df6fb432b6c26a/dinivolu.pdfIn PDF document text
- https://arhstroi.by/uploads/files/pijaxedawajanaxenoveja.pdfIn PDF document text
- http://3duct.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611c6940c20b7---10811673156.pdfIn PDF document text
- http://jagodkaprzedszkole.pl/userfiles/file/wobetoj.pdfIn PDF document text
- http://www.holzbau-hoelzl.at/wp-content/plugins/formcraft/file-upload/server/content/files/160786b5a7e878---19933783591.pdfIn PDF document text
- http://botanicgardenscafe.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160aa2ed7ca27b---mazuge.pdfIn PDF document text
- http://gf-location.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160f8e56c8be69---21899651494.pdfIn PDF document text
- https://kolodezrus.ru/wp-content/plugins/super-forms/uploads/php/files/3bf34f3561f93726b197997c9deb03fc/zusarow.pdfIn PDF document text
- http://www.rebranded.tv/wp-content/plugins/formcraft/file-upload/server/content/files/160c294131ed9a---3248305967.pdfIn PDF document text
- https://ivanamihic.com//files/fobiwiwutakuraluwi.pdfIn PDF document text
- https://www.chinacimctrailer.com/wp-content/plugins/super-forms/uploads/php/files/9cea61e153b66d00665ca16e29d0261e/38506032792.pdfIn PDF document text
- http://botosani.ro/img/uploads/file/42473097365.pdfIn PDF document text
- http://metisentry.net/ckfinder/userfiles/files/degegujobef.pdfIn PDF document text
- https://skazkavdom.com/wp-content/plugins/super-forms/uploads/php/files/ccb37a84f19f300f5a5b74697c31baf6/62734489292.pdfIn PDF document text
- http://www.asejnrtigers.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607d7367af6bb---dumare.pdfIn PDF document text
- https://asken.as/bilder/file/96484257910.pdfIn PDF document text
- http://csc-021.com/userfiles/file/20210623153813_g5hehx.pdfIn PDF document text
- http://neoneophytou.com/ckfinder/userfiles/files/wolesufovefu.pdfIn PDF document text
- https://metroguards.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a847484c6d7---2688064271.pdfIn PDF document text
- https://istanajp2.com/contents//files/ledupuwuriganutirobageji.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=mutual+termination+of+lease+agreement+templatePDF 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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000db9a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDB9A	16552 bytes
SHA-256: `1d955ef02969ea1b774ab16512e883e4d4cdf77660a0c3e4e6e2c1a5a7e1bb5d`
`font_01_sfnt_off00010699.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10699	10792 bytes
SHA-256: `ac61a0dae187fdd069aac58439b79aeedf5261bc4a10a753b02faefd3a256e04`
`font_02_sfnt_off00011f75.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11F75	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

Open this report in the interactive analyzer, or submit your own file for analysis.