Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b3beb70b5e62346…

MALICIOUS

PDF

41.4 KB Created: 2020-08-19 07:15:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8d9f621877e871d94026c0c08c6fb802 SHA-1: 28a66e5cd2628f7dc7cbf01029ed2d71c3757d56 SHA-256: 3b3beb70b5e62346985007b10c852adc0073ef234e80ec2931aff3d10e0c05e8
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=abide+with+me+free+pdf'. This URL is likely used to redirect users to a malicious site for phishing or malware delivery. The document body also contains numerous links to external PDFs hosted on various domains, indicating a link farm strategy to improve search engine ranking and potentially distribute further malicious content. No scripts were extracted, but the primary attack vector appears to be social engineering via a deceptive PDF lure.

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.com/pify?keyword=abide+with+me+free+pdf
    • http://kitabefi.my31sisters.org/uploads/1/3/1/4/131438464/muwimugixa.pdf
    • http://files.dpcoachingcentre.com/uploads/1/3/0/8/130874039/95ecc32.pdf
    • http://malija.lslfire.com/uploads/1/3/1/8/131856543/sonorugigikamaj_selegobuxe.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vasopamomakazemujavinis.pdf
    • https://cdn.shopify.com/s/files/1/0438/2133/4690/files/66922089118.pdf
    • https://cdn.shopify.com/s/files/1/0433/5645/5067/files/.pdf
    • https://cdn.shopify.com/s/files/1/0430/8441/5143/files/biochemical_reactions.pdf
    • https://cdn.shopify.com/s/files/1/0430/8438/2357/files/46169609061.pdf
    • https://cdn.shopify.com/s/files/1/0433/5117/9416/files/50430091354.pdf
    • https://cdn.shopify.com/s/files/1/0433/1352/8987/files/76113497560.pdf
    • https://cdn.shopify.com/s/files/1/0431/3251/8555/files/nemev.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_off000064eb.bin
09604965dbcae1bbf1190abead23d99b1b06983bca91feb841298c2b69cc0ec8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64EB 5084 bytes
font_01_sfnt_off0000761c.bin
a5430047985f73d4bade4b5b1ad5f1bae253ef5f40a98c599330cacbc43f7deb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x761C 10284 bytes

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