Malicious PDF — malware analysis report

Static analysis result for SHA-256 acd507b4a6a8c772…

MALICIOUS

PDF

40.7 KB Created: 2020-08-05 22:58:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6a78a159c9ded4d25a393aade30339d2 SHA-1: 79791df20e6c6c8c85fdd871ab6ce971929d1354 SHA-256: acd507b4a6a8c7728380e66f7f3fe080b07a5d332cee67891b24f9c891611492
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with the primary link redirecting to malicious infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=free+food+truck+business+plan+pdf', which is flagged as a malicious redirector. This suggests the PDF is designed to trick users into downloading further malicious content or visiting phishing sites.

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=free+food+truck+business+plan+pdf
    • http://files.reikiwithjane.com/uploads/1/3/0/7/130738765/zunosofun-lukali-fusokedigapugid.pdf
    • http://files.worshiphousemusic.com/uploads/1/3/0/9/130969673/vesalezofabeduxu.pdf
    • http://files.laganhistory.com/uploads/1/3/1/8/131871740/8041193.pdf
    • http://files.arterialculture.com/uploads/1/3/0/8/130874526/9394639.pdf
    • http://files.americalibertyforum.com/uploads/1/3/0/7/130738562/sisis.pdf
    • https://cdn.shopify.com/s/files/1/0435/5942/0063/files/careplus_authorization_form.pdf
    • https://cdn.shopify.com/s/files/1/0438/1242/1789/files/management_information_systems_laudon_13th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0437/9928/1821/files/schermerhorn_management_13th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0427/8976/5276/files/kimodab.pdf
    • https://cdn.shopify.com/s/files/1/0428/8544/7833/files/61589746805.pdf
    • https://cdn.shopify.com/s/files/1/0431/9186/1410/files/82801937892.pdf
    • https://cdn.shopify.com/s/files/1/0428/3046/3135/files/xufuzizaregalemase.pdf
    • https://cdn.shopify.com/s/files/1/0437/0392/6939/files/xukubenomutoxijefezi.pdf
    • https://cdn.shopify.com/s/files/1/0430/0151/2090/files/botafakix.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rabilividobakomitunaxizug.pdf
    • https://cdn.shopify.com/s/files/1/0432/9380/2646/files/63499644855.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_off000060b2.bin
3baa84e01bd95ae3fae729d93ce6220b2a79887f702532ac935ffac8d33c3b02		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60B2 5308 bytes
font_01_sfnt_off000072d1.bin
247299b851c70242cbc09dcded45ed05c19fc5684cf9057eaf042f6130a1579d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72D1 10240 bytes

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