Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7b8d28b0ab2ee8b…

MALICIOUS

PDF

47.7 KB Created: 2020-08-12 05:00:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6d241c4d6d2b761eb0d25f38bef6fd9a SHA-1: 7a8a778fa515a23f3219d627f3adc240375c1950 SHA-256: f7b8d28b0ab2ee8becc2fb3fb1804782a9fd916c3a30c2354a38ee3a10f85d90
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely intended to lead the user to a malicious site. The document body, though heavily obfuscated, contains the URL and appears to be a lure related to medication administration. The PDF also contains a large number of links to Shopify domains, likely for SEO manipulation to improve search engine ranking for malicious content.

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.cc/pify?keyword=vias+administra%25C3%25A7%25C3%25A3o+de+medicamentos+pdf
    • http://files.dianakersey.com/uploads/1/3/0/7/130740033/sekawijujifovudubob.pdf
    • http://files.eastdulwichmummy.com/uploads/1/3/0/9/130969746/velegagefabojikufumu.pdf
    • http://sujifu.vanessayoung.net/uploads/1/3/1/6/131636648/243638bd.pdf
    • http://torig.northlandfloorlaying.co.nz/uploads/1/3/1/4/131407158/6debca.pdf
    • https://cdn.shopify.com/s/files/1/0431/5951/9387/files/88742698253.pdf
    • https://cdn.shopify.com/s/files/1/0433/4413/4294/files/cantate_domino_josu_elberdin_satb.pdf
    • https://cdn.shopify.com/s/files/1/0434/7042/2180/files/97866484474.pdf
    • https://cdn.shopify.com/s/files/1/0434/5040/0920/files/vewasediwe.pdf
    • https://cdn.shopify.com/s/files/1/0435/8638/8136/files/tujixijevulugejebazeko.pdf
    • https://cdn.shopify.com/s/files/1/0428/1748/7011/files/10512714241.pdf
    • https://cdn.shopify.com/s/files/1/0431/8117/9029/files/zekadeg.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/doxufuvezemog.pdf
    • https://cdn.shopify.com/s/files/1/0443/1344/4508/files/cours_gratuit_rapprochement_bancaire.pdf
    • https://cdn.shopify.com/s/files/1/0438/0770/3201/files/lizolowinidobuvi.pdf
    • https://cdn.shopify.com/s/files/1/0437/1942/6198/files/ectomycorrhizae_and_endomycorrhizae.pdf
    • https://cdn.shopify.com/s/files/1/0429/7513/3859/files/98583437202.pdf
    • https://cdn.shopify.com/s/files/1/0449/9632/9636/files/ccna_routing_and_switching_guide.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_off00007797.bin
c6d31f477f790c66500b443a286b905f4fc54d0ab29104eff59ef1881e1bc451		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7797 5736 bytes
font_01_sfnt_off00008a22.bin
897b79d687a9a6b8fb100ff3d54b1ec35a69f08379553043d2ecf2af23d6fc85		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A22 12556 bytes

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