PDF malware analysis — malicious · 41b1c1a55ed3ac21

MALICIOUS

PDF

50.6 KB Created: 2020-12-15 19:50:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 88aa890a7521516c8392f828c0574d8c SHA-1: 9d791373b01a74851edfe9967f917afb08e6cbe8 SHA-256: 41b1c1a55ed3ac219f58a2a59fec3b4027dd5d64f8cfbf043d53dd436c782f3d

212 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with at least one identified as a malicious redirector. The document body, though heavily obfuscated, appears to be a lure related to a tablet manual. The presence of a link farm and ClamAV detection further supports a malicious classification, likely for phishing or malware distribution.

Machine Learning

Nyx PDF Classifier malicious score 0.8247

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.
Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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://traffmen.ru/aws?utm_term=alcatel+one+touch+pixi+tablet+manual
- https://ruvetuse.weebly.com/uploads/1/3/4/6/134618438/ziwofizafadezeloxixa.pdf
- https://static.s123-cdn-static.com/uploads/4451932/normal_5fc7677febfac.pdf
- https://cdn-cms.f-static.net/uploads/4484805/normal_5fbeec2f7b9fe.pdf
- https://mabufome.weebly.com/uploads/1/3/4/8/134880487/wivizusu.pdf
- https://static.s123-cdn-static.com/uploads/4454678/normal_5fc3edb91cd1f.pdf
- https://s3.amazonaws.com/kukazowox/44230057979.pdf
- https://s3.amazonaws.com/bisegilupuf/93565026080.pdf
- https://s3.amazonaws.com/pujinit/bekuluripojetejofebebu.pdf
- https://s3.amazonaws.com/xebareto/52221560403.pdf
- https://uploads.strikinglycdn.com/files/8c1778c9-89e0-4267-b1fe-44d0f63b6226/vigofobiwetutisejurabupo.pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000b942.bin` `59701ab6f1a8c012dd8ec870d317e4651c2abf9fe53e1fa5cdcb5946a55c7908`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB942	3724 bytes

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