Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6ba927a6dd91e6e…

MALICIOUS

PDF

72.7 KB Created: 2020-08-31 19:40:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1b086708c603868378f71d3d10d67286 SHA-1: c904fef9f7d75a15afbd836e8be7c1d3054f0b6e SHA-256: d6ba927a6dd91e6e551767c1861a0f5f0808a06a1a7859669d52e68ad0425e74
128 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.club/wix?keyword=acog+guidelines+for+postpartum+care', which is flagged as malicious. This suggests the primary purpose is to redirect the user to a potentially harmful website, likely for phishing or malware delivery.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.club/wix?keyword=acog+guidelines+for+postpartum+care
    • https://static.usrfiles.com/ugd/b8c837_2bf04599d58845da978ab4e18c8ee375.pdf
    • https://static.usrfiles.com/ugd/07625c_046c5f65f15d43f08647cb0c077debdc.pdf
    • https://static.usrfiles.com/ugd/b8c837_3675fb5c98b3446fbc976eeab6f6743e.pdf
    • https://static.usrfiles.com/ugd/b8c837_99bc11497dc34e3d9d1ab12ef2ae3b82.pdf
    • https://cdn.shopify.com/s/files/1/0432/5824/9380/files/47724185397.pdf
    • https://cdn.shopify.com/s/files/1/0431/9910/3136/files/65162168718.pdf
    • https://cdn.shopify.com/s/files/1/0431/8242/4215/files/sheet_music_blank_book.pdf
    • https://cdn.shopify.com/s/files/1/0432/2089/3851/files/89038691092.pdf
    • https://cdn.shopify.com/s/files/1/0431/1249/7312/files/examen_completo_pet_cambridge.pdf
    • https://cdn.shopify.com/s/files/1/0429/8683/2035/files/reporemevevuz.pdf
    • https://cdn.shopify.com/s/files/1/0433/6127/1959/files/71936714871.pdf
    • https://cdn.shopify.com/s/files/1/0436/1748/4957/files/85602755451.pdf
    • https://cdn.shopify.com/s/files/1/0428/9753/9231/files/julodilubuzupawakopuniz.pdf
    • https://cdn.shopify.com/s/files/1/0431/8344/0036/files/99969028785.pdf
    • https://cdn.shopify.com/s/files/1/0431/3609/0267/files/16279329442.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_off0000df20.bin
5b251e963b68cb5669a5f640234106704f071aebe46f5e2f924d62df9ae1f87d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDF20 5464 bytes
font_01_sfnt_off0000f1a9.bin
eb80c48c3a20e2a41bd1b300a6095e3c36b944b784d22edb8fc7de0088be510b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF1A9 10524 bytes

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