Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfe8967189b72cdd…

MALICIOUS

PDF

39.0 KB Created: 2020-08-20 13:00:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 43689ec67a8c394e942e5a0441b385e3 SHA-1: c7ed50f78dcd7f24965d581fe33ee14c45963acc SHA-256: dfe8967189b72cdd083bd14f8dd7c874bfba2b3fd3b59793cda763066e81f706
128 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=bid+bond+performance+bond+and+payment+bond'. Additionally, it exhibits characteristics of a link farm, embedding numerous external PDF links, many hosted on Shopify. The document body and a heuristic indicate a lure related to invoices or payment bonds, suggesting the intent is to trick the user into clicking the malicious link for financial or credential theft.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=bid+bond+performance+bond+and+payment+bond
    • http://files.lorraineparishwriter.com/uploads/1/3/0/8/130873870/lobojixo.pdf
    • https://cdn.shopify.com/s/files/1/0431/9599/0175/files/ntpc_admit_card_sarkari_exam.pdf
    • https://cdn.shopify.com/s/files/1/0428/3822/9158/files/93906816414.pdf
    • https://cdn.shopify.com/s/files/1/0435/5050/7167/files/sokuba.pdf
    • https://cdn.shopify.com/s/files/1/0430/6354/1917/files/debbie_harry_face_it.pdf
    • https://cdn.shopify.com/s/files/1/0431/8534/0580/files/fixug.pdf
    • https://cdn.shopify.com/s/files/1/0431/1741/2501/files/worekafuf.pdf
    • https://cdn.shopify.com/s/files/1/0433/7005/3784/files/23200792752.pdf
    • https://cdn.shopify.com/s/files/1/0438/9965/0216/files/bluestacks_4_apk_ykleme_sorunu.pdf
    • https://cdn.shopify.com/s/files/1/0428/7663/3247/files/keponira.pdf
    • https://cdn.shopify.com/s/files/1/0429/3401/0015/files/star_wars_skins_for_minecraft_pe.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_off000059ef.bin
64714b4d6b79b5407a62dd2b88733defa94683915ff5292c3417739fef7266d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59EF 5380 bytes
font_01_sfnt_off00006c22.bin
414b74c8d32833b3197fdc1a1d1ab8f54a426c467d0cf8a1c92671c3cb7db45d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C22 10260 bytes

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