Malicious PDF — malware analysis report

Static analysis result for SHA-256 babcab5a764c977e…

MALICIOUS

PDF

52.9 KB Created: 2020-09-10 15:17:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 02e060eeceed115c549c3f1af09b483c SHA-1: 9fae9e343b2891edc7cfc155c1f6c59272b66607 SHA-256: babcab5a764c977e4a8b4bbcd6018ec71b8981fac63f55bb0afddc2802e928ad
150 Risk Score

Malware Insights

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

The PDF contains a prominent link disguised as an update notification for Android devices, which is a common social engineering tactic. The link leads to a known malicious redirector, indicating a phishing or malware distribution attempt. The PDF also contains a large number of external links, characteristic of a link farm used to improve search engine ranking for malicious content.

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.link/wix?keyword=update+android+6.+0+oppo+f1s
    • http://files.rueckkehrzentrenschliessen.org/uploads/1/3/0/7/130739393/wesiguxan-saxanopirupox.pdf
    • http://dotit.langsidechurch.org/uploads/1/3/1/0/131070340/3738448.pdf
    • http://files.schwetjeproject.com/uploads/1/3/1/4/131483153/nexadomaxutokuzonup.pdf
    • http://files.rueckkehrzentrenschliessen.org/uploads/1/3/0/7/130739393/wesiguxan-sa
    • https://static.usrfiles.com/ugd/f14cf6_8d3b69b6280c48888aa2cd36724614ce.pdf
    • https://static.usrfiles.com/ugd/0af078_89d1bc2a84174c8fa0e8069ff671b4f7.pdf
    • https://static.usrfiles.com/ugd/4329d7_006ee9441da34201bc90eb2b3dbf81db.pdf
    • https://static.usrfiles.com/ugd/23b571_e1a8a1a1613341d6b9923179935e28ae.pdf
    • https://static.usrfiles.com/ugd/b2ba6b_98b38db48d9d400c9bf201b8ab25c56a.pdf
    • https://cdn.shopify.com/s/files/1/0434/1265/2194/files/bibikugezitewefapetemox.pdf
    • https://cdn.shopify.com/s/files/1/0463/6606/4801/files/airliner_world_october_2019.pdf
    • https://cdn.shopify.com/s/files/1/0429/7516/6620/files/kixibofujunenadut.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007a45.bin
e978c27837dbcb05dfbfad7342286092a7eddacc587b224e0a5ed8e697c3e4d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A45 5376 bytes
font_01_sfnt_off00008ca9.bin
f79f0ab9eaefb9601c3e0c9f0cd895f694f4e704adf215db90a6ad1248c845b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CA9 10740 bytes
font_02_sfnt_off0000b15e.bin
af1530143efd25a4d986e000cb1c80cb570b34c41eee97896e3fce04f26a5377		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB15E 16292 bytes

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