Malicious PDF — malware analysis report

Static analysis result for SHA-256 2530a7d529a91edb…

MALICIOUS

PDF

33.4 KB Created: 2020-08-23 21:08:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 69fb64d36623940fcef197773cb93846 SHA-1: 9cd1b925b63e62195d4a778d48fc3340e73cd103 SHA-256: 2530a7d529a91edbf7e92ccf4c5645328b58e4d333871ea46efc2e44384dc685
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, with one pointing to a known malicious redirector. The document body appears to be malformed or corrupted, but the presence of numerous external PDF links suggests a link farm or SEO poisoning attack. The primary malicious URL identified is https://ttraff.ru/pify?keyword=avision+sheetfed+scanner+av176u.

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.ru/pify?keyword=avision+sheetfed+scanner+av176u
    • http://files.phillycleaningpros.com/uploads/1/3/0/8/130813100/wajur.pdf
    • https://cdn.shopify.com/s/files/1/0437/3518/7605/files/potezumasusofawom.pdf
    • https://cdn.shopify.com/s/files/1/0435/2540/6874/files/cardiac_heart_failure.pdf
    • https://cdn.shopify.com/s/files/1/0435/7973/6223/files/nogojizibamadim.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/64541570927.pdf
    • https://cdn.shopify.com/s/files/1/0436/6339/2921/files/dumowesuzexe.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pobilimej.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/39858795743.pdf
    • https://cdn.shopify.com/s/files/1/0429/2087/0044/files/bifelofekabemifevofaxoz.pdf
    • https://cdn.shopify.com/s/files/1/0432/4484/7266/files/71551160034.pdf
    • https://cdn.shopify.com/s/files/1/0457/3698/4742/files/bubomezilaginuj.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_off00004489.bin
d9274d6767c132fee8133e3a4201a9f530c40c54571f0cf03072622bb6cc8a6e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4489 5412 bytes
font_01_sfnt_off000056f7.bin
1638ba38eb368cc70d036b9b51010a6c2a01d3bae6743562f9d70eb2748d006b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56F7 10012 bytes

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