Malicious PDF — malware analysis report

Static analysis result for SHA-256 e96214df64d15955…

MALICIOUS

PDF

70.7 KB Created: 2021-03-21 00:29:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 531450a6e80e7508cb2e246870d9432a SHA-1: 9fc9093528584f481d9ed4436d1e544c66c33ac9 SHA-256: e96214df64d15955b73218743a59af6072044756bce5809d5fb6f80d2cdc6deb
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or phishing attempt. The ML classifier and ClamAV detection strongly indicate maliciousness. While no scripts were explicitly extracted, the PDF structure and numerous external URLs point towards a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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
  • 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://pelibifir.ru/wix?keyword=526+area+code+canada
    • https://static.s123-cdn-static.com/uploads/4426682/normal_5ffb5b81cb25e.pdf
    • https://cdn.sqhk.co/vavewiminiv/ggibXlx/69666385172.pdf
    • https://static.s123-cdn-static.com/uploads/4387056/normal_5fec784875df7.pdf
    • https://nerilumasufut.weebly.com/uploads/1/3/1/4/131437044/lopimisudelupan.pdf
    • https://cdn.sqhk.co/devuzemalut/ha0zjeG/81084325702.pdf
    • https://cdn-cms.f-static.net/uploads/4453730/normal_60171b1840357.pdf
    • https://cdn-cms.f-static.net/uploads/4412174/normal_600bef330e0eb.pdf
    • http://shopeuro.pro/ledezozawimy31n.pdf
    • https://static.s123-cdn-static.com/uploads/4462714/normal_60055ee40b4b1.pdf
    • http://mafesilotob.iblogger.org/video_editor_pro_apk_mod.pdf
    • https://cdn.sqhk.co/manuguwe/XQthhfM/75253936892.pdf
    • https://cdn.sqhk.co/madobeborozu/hWvRBoh/capitalismo_gore_valencia.pdf
    • https://cdn-cms.f-static.net/uploads/4367920/normal_605545ae311fa.pdf
    • http://onsideball.info/211961720348810.pdf
    • https://lanuwoga.weebly.com/uploads/1/3/1/6/131637333/6364929.pdf
    • https://cdn-cms.f-static.net/uploads/4490949/normal_5fda79bfb21da.pdf
    • https://cdn.sqhk.co/pepegizeso/DFoLgiN/lynx_grill_for_sale_craigslist.pdf
    • http://cmbmarketing.agency/tatiwedixeribidasae5sla.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://makunixiwelukiz.rf.gd/game_maker_studio_rpg_tutorial.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.

FilenameKindSourceSize
font_00_sfnt_off0000d9d1.bin
c65c15034f0e82bd284719732e96664ab6d5ebcda9a735bbb56e249d0b4903f0
pdf-font-stream PDF embedded font (sfnt) at offset 0xD9D1 5040 bytes
font_01_sfnt_off0000eb03.bin
d8e99168f6a3f2f7ccf3ce25ed58e205925015b0a32bb3c9480a3788bd477b24
pdf-font-stream PDF embedded font (sfnt) at offset 0xEB03 10260 bytes