Malicious PDF — malware analysis report

Static analysis result for SHA-256 02e7acf02191d8b8…

MALICIOUS

PDF

44.5 KB Created: 2020-08-04 22:42:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b323f2e8b768a495a0060eb6a11f19f7 SHA-1: 473fbb2dc6418faf3e622f80c3c6c58d7306514f SHA-256: 02e7acf02191d8b8e7b3ab871ce7f921f5fc63c670048b80b5cd5f356f03600d
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many pointing to what appears to be a link farm designed to distribute malicious content. One prominent URL, https://ttraff.cc/pify?keyword=financial+risk+management+tools+pdf, is identified as a malicious redirector. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains text related to financial risk management, likely a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • 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://ttraff.cc/pify?keyword=financial+risk+management+tools+pdf
    • http://files.drbfpalmer.com/uploads/1/3/1/4/131407802/3578284.pdf
    • http://files.solretapsychicreadings.com/uploads/1/3/0/9/130969077/fevoben_neloje_sovawasuwera.pdf
    • http://files.gapco.online/uploads/1/3/0/8/130874489/1662578.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/3010/9593/files/54230144037.pdf
    • https://cdn.shopify.com/s/files/1/0431/4746/0768/files/62864456300.pdf
    • https://cdn.shopify.com/s/files/1/0429/7926/2615/files/80778996018.pdf
    • https://cdn.shopify.com/s/files/1/0431/9199/2484/files/68967403747.pdf
    • https://cdn.shopify.com/s/files/1/0434/0062/6341/files/97427954072.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xogasetixudaxaw.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/womosoravitixugefiwil.pdf
    • https://cdn.shopify.com/s/files/1/0437/3456/5025/files/18518612239.pdf
    • https://cdn.shopify.com/s/files/1/0435/5430/8245/files/winchester_ranger_model_120.pdf
    • https://cdn.shopify.com/s/files/1/0438/3332/7776/files/16096498158.pdf
    • https://cdn.shopify.com/s/files/1/0439/8029/2254/files/2009_ford_focus_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0440/1712/3493/files/66336105801.pdf
    • https://cdn.shopify.com/s/files/1/0427/8976/5276/files/lolatijuzikifu.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_off0000709d.bin
ead1bff4dbc2ca491feb14b3a5e023fac7feca94584c7188b43ebb511db373be
pdf-font-stream PDF embedded font (sfnt) at offset 0x709D 5492 bytes
font_01_sfnt_off00008339.bin
3fb7a4d60be84a91e6c49c369ae050199ccd14c544c807910b9cb3a8ac2dc0a9
pdf-font-stream PDF embedded font (sfnt) at offset 0x8339 9868 bytes