Malicious PDF — malware analysis report

Static analysis result for SHA-256 482e45a653fe4f85…

MALICIOUS

PDF

40.6 KB Created: 2020-08-20 07:39:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b27940d160fa1812b0804eabacd4797a SHA-1: d67e59a74191ae175c9d516809f11679ee7492ae SHA-256: 482e45a653fe4f8566b0a942d0ef9806ce4e351f9b6856f5ec2d74b7ca736977
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm and a critical redirector link pointing to traff.cc, indicating a phishing or redirection attempt. The ML classifier strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the same redirector URL and other PDF links, suggesting the primary goal is to redirect the user to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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://ttraff.cc/pify?keyword=wrought+iron+gate+design+templates
    • http://powaseven.burstpublishing.com/uploads/1/3/0/8/130814575/lubowavaxejumasewebi.pdf
    • http://midizob.cocokaboo.com/uploads/1/3/1/3/131380351/8153385.pdf
    • http://fakola.lisavelezphotography.com/uploads/1/3/1/4/131408224/demupogamula.pdf
    • http://files.thedollhousellc.com/uploads/1/3/1/3/131381602/2034825.pdf
    • http://fizez.nbriding.com/uploads/1/3/1/6/131606349/getuzun_bupalu_nonurep.pdf
    • https://cdn.shopify.com/s/files/1/0435/1839/4527/files/happy_wheels_on_totaljerkface.pdf
    • https://cdn.shopify.com/s/files/1/0434/3798/1852/files/comment_assembler_des_entre_eux.pdf
    • https://cdn.shopify.com/s/files/1/0431/6564/7012/files/zatanoxi.pdf
    • https://cdn.shopify.com/s/files/1/0430/8277/6729/files/rules_of_subject_verb_agreement.pdf
    • https://cdn.shopify.com/s/files/1/0433/4541/2261/files/jititazoletafovovu.pdf
    • https://cdn.shopify.com/s/files/1/0436/0437/7757/files/peptic_ulcer_disease_diet_plan.pdf
    • https://cdn.shopify.com/s/files/1/0431/2278/6466/files/burn_baby_burn_meg_medina.pdf
    • https://cdn.shopify.com/s/files/1/0437/2204/7638/files/concise_guide_to_jazz.pdf
    • https://cdn.shopify.com/s/files/1/0430/7792/7072/files/anatomy_and_physiology_final_exam.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000618a.bin
52f7c785bd9df3aee6d0323216dd845f9a2f1d3bd91b17ec6b20d455c7d46104		 pdf-font-stream PDF embedded font (sfnt) at offset 0x618A 5384 bytes
font_01_sfnt_off000073bf.bin
e8305a38f409dc04ad09f9a57fd43dcd48a0e15c6ed932d171360aada82e0f93		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73BF 9912 bytes

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