Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff9aebfa261bea82…

MALICIOUS

PDF

55.5 KB Created: 2020-08-10 11:44:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 79b7618dd9f2f16da10ca1cc958bbce9 SHA-1: 28aec616547b669ce33ec948c3aba87e0520b761 SHA-256: ff9aebfa261bea8251500b089ad8bd5c584acf3164415293323a265fa8b83273
120 Risk Score

Malware Insights

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

The PDF contains numerous links, with a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK pointing to 'https://ttraff.ru/pify?keyword=intrusion+alarm+system+honeywell+pdf'. This indicates the document is designed to redirect users to malicious infrastructure. The PDF_SEO_LINK_FARM heuristic further suggests a large number of outbound links, likely for SEO manipulation or to host further malicious content. The embedded URL in the document body reinforces the redirection attempt.

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=intrusion+alarm+system+honeywell+pdf
    • http://rufop.greenblackdress.com/uploads/1/3/2/8/132814930/rukabidinude.pdf
    • http://files.brightchildcdc.com/uploads/1/3/1/0/131070144/4246151.pdf
    • http://files.langsidechurch.org/uploads/1/3/2/3/132303061/3cc50cd3e1.pdf
    • http://files.palmhouserecovery.com/uploads/1/3/1/3/131382226/33874c0ff225efb.pdf
    • https://cdn.shopify.com/s/files/1/0434/6576/9113/files/131531001.pdf
    • https://cdn.shopify.com/s/files/1/0430/4044/0471/files/nelorofuxokumitinokumevu.pdf
    • https://cdn.shopify.com/s/files/1/0434/9050/8960/files/dirivixizifedo.pdf
    • https://cdn.shopify.com/s/files/1/0435/3127/2346/files/leboxa.pdf
    • https://cdn.shopify.com/s/files/1/0428/8859/3567/files/diremaxuvabonemami.pdf
    • https://cdn.shopify.com/s/files/1/0447/9975/4397/files/reading_book_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/2384/2978/files/47622722948.pdf
    • https://cdn.shopify.com/s/files/1/0431/4087/4408/files/jupevojimi.pdf
    • https://cdn.shopify.com/s/files/1/0430/8847/8365/files/62804492477.pdf
    • https://cdn.shopify.com/s/files/1/0432/1515/9458/files/gefigurafotobe.pdf
    • https://cdn.shopify.com/s/files/1/0429/9862/8501/files/70677099518.pdf
    • https://cdn.shopify.com/s/files/1/0435/2668/4824/files/86022582409.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_off00009ab0.bin
f85e543e0b2fa388024dde2eb776ee10cfaa542d03b355dd5f963848acfdd451		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9AB0 5412 bytes
font_01_sfnt_off0000ad06.bin
2dbcf19f79383c768ab3192bb511fcd602768230a97c0d48ae13e51070eb488b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAD06 10496 bytes

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