Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea30087bdec120c3…

MALICIOUS

PDF

54.2 KB Created: 2020-08-25 10:54:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7fd91fd55f21c8a3ed6a43d30a58334b SHA-1: a1c24ca9ae7e6f316899ef0bce2161d65205bd40 SHA-256: ea30087bdec120c3df06e769a9ac475875966b68e55d3ed830c747bae0aa67a5
128 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body text, though heavily obfuscated, contains a URL that appears to be a lure for a 'free responsive email template'. This link, when followed, redirects to `https://ttraff.com/pify?keyword=free+responsive+email+template+for+mailchimp`, which is flagged as malicious. Another heuristic indicates a PDF link farm, with many links pointing to shopify.com, likely to obscure the malicious redirector.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=free+responsive+email+template+for+mailchimp
    • http://files.flextutoring.com/uploads/1/3/1/3/131398135/pukifokikukagafogum.pdf
    • http://files.heartofsamba.com/uploads/1/3/0/7/130739265/bisiko_jipaforunivan_duzukav_defasu.pdf
    • http://kijopobo.kellymichellebaker.com/uploads/1/3/0/8/130874679/5673650.pdf
    • https://cdn.shopify.com/s/files/1/0432/5369/4626/files/pulawumerozuxofezodirin.pdf
    • https://cdn.shopify.com/s/files/1/0431/8566/8259/files/prehistoric_archaeology_by_dk_bhattacharya.pdf
    • https://cdn.shopify.com/s/files/1/0439/4647/5678/files/wupatirinujevisowedokiged.pdf
    • https://cdn.shopify.com/s/files/1/0430/4837/0333/files/jafogexipitupidixibijo.pdf
    • https://cdn.shopify.com/s/files/1/0432/8924/7894/files/bibomunag.pdf
    • https://cdn.shopify.com/s/files/1/0431/7813/1611/files/dedes.pdf
    • https://cdn.shopify.com/s/files/1/0439/9942/8766/files/gold_ring_designs_catalogue.pdf
    • https://cdn.shopify.com/s/files/1/0433/2450/6266/files/breakthrough_thinking_thomas_vogel.pdf
    • https://cdn.shopify.com/s/files/1/0462/3489/4496/files/59185260092.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/ziwodukujaluladiludu.pdf
    • https://cdn.shopify.com/s/files/1/0464/1174/3400/files/chess_rules_in_gujarati_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/7607/5164/files/roles_of_teachers_in_curriculum_development_process.pdf
    • https://cdn.shopify.com/s/files/1/0431/4680/5402/files/netflix_mod_apk_for_android.pdf
    • https://cdn.shopify.com/s/files/1/0433/9400/7201/files/acceso_remoto_android_desde_pc.pdf
    • https://cdn.shopify.com/s/files/1/0437/3407/3505/files/19764009676.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_off000095fc.bin
6379695af3bdda62908381d795242e088652f5c617c76f386168f260f7ae3bbb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95FC 5272 bytes
font_01_sfnt_off0000a7c7.bin
73e83bdfbf8816c6d90f92f455527043d0a0dc275ff718b362ea460dcb31e49c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA7C7 10536 bytes

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