Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9da5b85a94f37b3…

MALICIOUS

PDF

40.8 KB Created: 2020-08-23 10:53:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 84fd1445e36de5e720a454513120bb5e SHA-1: 828f87fca6e2a64a549050d73a1272e58ce930a6 SHA-256: c9da5b85a94f37b39d1b8581170fc490a0c4fa81cab9164c24b30a96903f1e0a
128 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.cc/pify?keyword=get+credit+report+ireland'. Additionally, it exhibits characteristics of a link farm, with numerous embedded URLs, including one hosted on cdn.shopify.com. The 'SE_INVOICE_LURE' heuristic suggests the document's content is designed to trick the user into clicking the malicious link, likely for a phishing or scam purpose.

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=get+credit+report+ireland
    • http://files.federicoellade.eu/uploads/1/3/2/6/132695339/3762098.pdf
    • http://paned.otakipotteryclub.org/uploads/1/3/1/3/131383708/vojupob-jabil-loseja.pdf
    • http://files.dipintothereef.com/uploads/1/3/0/7/130776619/donunuzekaporado.pdf
    • http://files.unitedcollections.net/uploads/1/3/1/4/131406811/tezeve_rebef_ronotufu.pdf
    • https://cdn.shopify.com/s/files/1/0428/4468/4454/files/zolosujosifedodix.pdf
    • https://cdn.shopify.com/s/files/1/0434/5308/7909/files/when_genius_failed_download.pdf
    • https://cdn.shopify.com/s/files/1/0438/2189/1746/files/minecraft_weapon_mods.pdf
    • https://cdn.shopify.com/s/files/1/0432/0133/1360/files/evendale_ohio_police_reports.pdf
    • https://cdn.shopify.com/s/files/1/0431/0951/5425/files/98863496949.pdf
    • https://cdn.shopify.com/s/files/1/0428/7086/6079/files/92489424203.pdf
    • https://cdn.shopify.com/s/files/1/0432/4642/0132/files/clinical_chemistry_analyzer.pdf
    • https://cdn.shopify.com/s/files/1/0430/1042/4993/files/witekujapuzusogunuseziz.pdf
    • https://cdn.shopify.com/s/files/1/0434/7641/8713/files/31974718994.pdf
    • https://cdn.shopify.com/s/files/1/0431/0047/1456/files/soduvajefilifiw.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_off00006186.bin
62b8b215e17543e38c94749084fff061007ef7fd9dfc1f3af4e653c6ff43b712		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6186 4920 bytes
font_01_sfnt_off0000724f.bin
ca63dc3c6a1639dd981d8fb200cc2ad4236ffc01a722579ef8f1e0915522ba55		 pdf-font-stream PDF embedded font (sfnt) at offset 0x724F 10748 bytes

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