PDF malware analysis — malicious · a574d8004d5ff17f

MALICIOUS

PDF

58.6 KB Created: 2020-12-11 15:38:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 7850475f166ac9cde6321bea0e5dcb00 SHA-1: ac19f799c21085209d17388c5dfc977c42503bb8 SHA-256: a574d8004d5ff17f303af5c836ad73f32617ce9655806278fda0fb8de7dd18df

212 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many of which point to redirector infrastructure or potentially malicious content farms. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or distributing further malware. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to malicious sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9935

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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://gettraff.ru/aws?utm_term=free+beginner+flute+sheet+music+for+christmas
- https://cdn-cms.f-static.net/uploads/4449775/normal_5f9ed4e71e4c5.pdf
- https://cdn-cms.f-static.net/uploads/4460688/normal_5fbcb5c301cda.pdf
- https://rusopanuguxixat.weebly.com/uploads/1/3/4/6/134640346/7136129.pdf
- https://wugebanog.weebly.com/uploads/1/3/4/7/134709888/fufaro_gurepad_mopexupix_vopazaragig.pdf
- https://danawejenig.weebly.com/uploads/1/3/4/4/134499985/a0da1.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/fakuguvil/dreamweaver_cs5_lite_portable_free.pdf
- https://static1.squarespace.com/static/5fc2860b2bbd74065810de9f/t/5fcc8f442fa8bc6bcde371a2/1607241540963/meaning_ng_year_of_the_rabbit.pdf
- https://static1.squarespace.com/static/5fc0f73d1c8c741314321d77/t/5fc157d49d79364840bf864d/1606506453398/italian_volcano_lemon_juice_lemonade.pdf
- https://static1.squarespace.com/static/5fc5b6f82bbd740658277995/t/5fc78c0ab2fa4660c8d77bb1/1606913034949/set_mp3_as_ringtone_iphone_x.pdf
- https://uploads.strikinglycdn.com/files/0be5cfa8-13bb-4fca-93fb-40cacec0a2b3/dbz_dokkan_color_wheel.pdf
- https://uploads.strikinglycdn.com/files/5bc88e7e-e0da-481d-9d75-6bd22ce157b0/85366141622.pdf
- https://s3.amazonaws.com/gonavo/gizubibulone.pdf
- https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdf9555147b14804f89829/1606285658197/desoto_county_ms_tax_assessor.pdf
- http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000cd43.bin` `516d4c25157a000dbed35e128994157e2e9ed0a603de0aa991c9e12e81c563e5`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCD43	5392 bytes

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