Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e7da116f8af477f…

MALICIOUS

PDF

44.8 KB Created: 2020-08-21 00:33:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 502cc6316ef1f197a25ca1b4d707c207 SHA-1: f9774d2bb17dd84490ed88edaa4912160c617ec8 SHA-256: 2e7da116f8af477f571bf69e6bea546569e9e0a18c083b07bc498b167c1f4649
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one heuristic specifically flagging it as a malicious redirector. The primary malicious URL identified is https://ttraff.ru/pify?keyword=esame+autoptico+pdf, which is likely used to redirect users to a phishing or malware-hosting site. Another suspicious URL, http://pavewame.yaremkospt.com/uploads/1/3/0/8/130813528/sufer.pdf, was also extracted. The document body contains garbled text but includes the malicious URL, suggesting an attempt to disguise the malicious intent.

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=esame+autoptico+pdf
    • http://pavewame.yaremkospt.com/uploads/1/3/0/8/130813528/sufer.pdf
    • https://cdn.shopify.com/s/files/1/0428/6860/5095/files/the_last_remant_walkthrough.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/46824776831.pdf
    • https://cdn.shopify.com/s/files/1/0440/6116/3670/files/baunvo_bayern.pdf
    • https://cdn.shopify.com/s/files/1/0432/6742/4409/files/96539730206.pdf
    • https://cdn.shopify.com/s/files/1/0433/3142/0314/files/88726122633.pdf
    • https://cdn.shopify.com/s/files/1/0431/9415/5170/files/whirlpool_cabrio_dryer_manual.pdf
    • https://cdn.shopify.com/s/files/1/0438/1881/1552/files/siwisikog.pdf
    • https://cdn.shopify.com/s/files/1/0428/4186/6403/files/79314041722.pdf
    • https://cdn.shopify.com/s/files/1/0433/8660/1635/files/turkish_airlines_logo.pdf
    • https://cdn.shopify.com/s/files/1/0433/4570/7166/files/65257964772.pdf
    • https://cdn.shopify.com/s/files/1/0432/3845/7508/files/wibizuwudabogut.pdf
    • https://cdn.shopify.com/s/files/1/0462/1248/1177/files/tupezebeke.pdf
    • https://cdn.shopify.com/s/files/1/0463/0455/9261/files/19914531781.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_off000070eb.bin
0c2e332bd3490f624ba85bc79c2b728d4d8345c0b23c021d4922c397c0daeb69		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70EB 5128 bytes
font_01_sfnt_off00008254.bin
047904c81024b68498758de01577ca4b098b49126d57589a5cf27b1e9bec0d7a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8254 10752 bytes

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