PDF malware analysis — malicious · 3216eed95abaae7d

MALICIOUS

PDF

43.0 KB Created: 2020-11-02 11:42:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 73798e5c5436eec1623cbae723546fdd SHA-1: 561e5f421a3505308051acf0b7021ab64fed4af4 SHA-256: 3216eed95abaae7d1415d9a01d72df86bc81498549f6c3ad7c279a9a1c92086d

114 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector, identified by the heuristic PDF_MALICIOUS_REDIRECTOR_LINK. The document body, though heavily obfuscated, contains the URL and keywords suggesting a lure for a user guide. The SE_CALLBACK_LURE heuristic further supports a phishing or scam pretext. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
Callback phishing phone lure medium SE_CALLBACK_LURE

Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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://ggtraff.ru/123?keyword=audix+voicemail+user+guide+pdf
- https://wevuviwujito.weebly.com/uploads/1/3/1/6/131636984/16986831e0.pdf
- https://vekejuritikoj.weebly.com/uploads/1/3/1/8/131857631/vuregurep.pdf
- https://satobolusiv.weebly.com/uploads/1/3/1/3/131398412/05155d31df3.pdf
- https://cdn-cms.f-static.net/uploads/4366040/normal_5f927ad55b8ec.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/lorifawuvawot/joy_of_creation_wiki.pdf
- https://uploads.strikinglycdn.com/files/5ba7ab37-1db4-4974-a3fb-4100ab78acb9/bootstrap_studio_themes_free.pdf
- https://s3.amazonaws.com/bawalidamovidud/area_code_626.pdf
- https://uploads.strikinglycdn.com/files/b7053983-6b7a-43e2-afad-0dc52922fb8a/kilawajarojixogiruzaraz.pdf
- https://s3.amazonaws.com/jemazejodep/48314237904.pdf
- https://s3.amazonaws.com/wuniku/siklus_hidup_fasciola_hepatica.pdf
- https://s3.amazonaws.com/muwemivumazulax/kanebesezijemula.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000069d2.bin` `666f617e7104d167f54f039908a8147ad513996a53734daa67376e70f07f3e05`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x69D2	5592 bytes
`font_01_sfnt_off00007cc9.bin` `64296cc18711949807cf9b5b84a9daa1578f46a22f5de55ff483fe2000557ccd`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7CC9	10112 bytes

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