Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef66637d22a498b8…

MALICIOUS

PDF

43.1 KB Created: 2020-08-14 05:24:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 907ce60e4148c329922a2daef0f88ae4 SHA-1: 6748b434fd8b147f1833c3044149f0d31e45c460 SHA-256: ef66637d22a498b860526d972e9ec29856c0525457dafd31f8e325a913419773
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=thanksgiving+menu+template+pdf'. This URL is part of a link farm, as indicated by another critical heuristic. The document body also contains this URL, suggesting a social engineering lure to trick users into clicking on malicious content. No scripts were extracted, and the primary malicious activity appears to be redirection to a potentially harmful site.

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=thanksgiving+menu+template+pdf
    • http://begowu.artoutofblack.com/uploads/1/3/2/6/132680839/vituliwivobe_nuwifu.pdf
    • http://lagosoro.weatoguefarm.com/uploads/1/3/0/7/130776132/9b04ec8164.pdf
    • http://files.bwamanila.com/uploads/1/3/1/3/131381799/3739181.pdf
    • https://cdn.shopify.com/s/files/1/0439/3939/7790/files/cake_decorating_tutorials_for_beginners.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/54313135065.pdf
    • https://cdn.shopify.com/s/files/1/0436/9226/1529/files/46691125526.pdf
    • https://cdn.shopify.com/s/files/1/0433/6739/9575/files/osrs_clue_coordinates.pdf
    • https://cdn.shopify.com/s/files/1/0431/2429/3796/files/5052189084.pdf
    • https://cdn.shopify.com/s/files/1/0431/9019/0248/files/tufoxopagafukageg.pdf
    • https://cdn.shopify.com/s/files/1/0432/5294/0968/files/62784561788.pdf
    • https://cdn.shopify.com/s/files/1/0434/7179/8424/files/agility_workout.pdf
    • https://cdn.shopify.com/s/files/1/0431/2832/4257/files/waweg.pdf
    • https://cdn.shopify.com/s/files/1/0428/2672/7580/files/59272848928.pdf
    • https://cdn.shopify.com/s/files/1/0433/0546/8068/files/dilifuvupe.pdf
    • https://cdn.shopify.com/s/files/1/0439/2324/3176/files/call_of_cthulhu_7th_edition_core_rulebook.pdf
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/nuxiwofenan.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_off00006985.bin
86be1867898804c9180fcd05f5b0315ede6a0a1255d1e724f32599ffa52a0f8d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6985 5432 bytes
font_01_sfnt_off00007be3.bin
535ee57ef9b9b201bf43affbf22b8c2a8ae86b3e99d7247c9a01a6b2306f4731		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BE3 10248 bytes

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