Malicious PDF — malware analysis report

Static analysis result for SHA-256 2683a83be88f2fc3…

MALICIOUS

PDF

50.6 KB Created: 2020-08-23 01:52:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a82caec873f6982162f34b07652c284c SHA-1: 6e9f4033a3045f549591e212e8f4355c0a60fa08 SHA-256: 2683a83be88f2fc3cf2377c8bfa290db0ba932197001bcb748e9f613280930ca
128 Risk Score

Malware Insights

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

The PDF file contains a link farm with 30 external PDF links, many hosted on cdn.shopify.com, and a critical redirector link to 'ttraff.cc'. The document body, though corrupted, contains text related to 'sikkens srd stain application guide' and the malicious URL, suggesting a lure to disguise the malicious intent. The primary malicious URL is https://ttraff.cc/pify?keyword=sikkens+srd+stain+application+guide, which is likely used for phishing or malware distribution.

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.cc/pify?keyword=sikkens+srd+stain+application+guide
    • http://files.ivazullo.com/uploads/1/3/1/8/131871993/mopovewabepulipimeso.pdf
    • http://tejur.sghock.com/uploads/1/3/2/3/132302868/3436268.pdf
    • http://files.cn.lglministry.org/uploads/1/3/1/3/131381363/bavebomajugiwis_denivekeduluno_bikoxeberiw.pdf
    • http://files.crossfitsouthforney.com/uploads/1/3/1/3/131398347/3201393.pdf
    • https://cdn.shopify.com/s/files/1/0440/5913/2054/files/minn_kota_maxxum_80.pdf
    • https://cdn.shopify.com/s/files/1/0434/5433/3093/files/document_safety_incident_report.pdf
    • https://cdn.shopify.com/s/files/1/0431/4805/0583/files/rizawowikive.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tokisesuzarutaxiwiru.pdf
    • https://cdn.shopify.com/s/files/1/0432/4976/2459/files/amadeus_peter_shaffer_italiano.pdf
    • https://cdn.shopify.com/s/files/1/0433/8014/6334/files/96208850617.pdf
    • https://cdn.shopify.com/s/files/1/0432/0706/5760/files/tcode_for_machine_breakdown_report.pdf
    • https://cdn.shopify.com/s/files/1/0434/6416/3490/files/kakejogerimela.pdf
    • https://cdn.shopify.com/s/files/1/0433/6841/5400/files/33898178276.pdf
    • https://cdn.shopify.com/s/files/1/0429/5468/6617/files/misuxixelozok.pdf
    • https://cdn.shopify.com/s/files/1/0440/6090/1528/files/dennis_g_zill_differential_equations.pdf
    • https://cdn.shopify.com/s/files/1/0428/5209/0022/files/38497228426.pdf
    • https://cdn.shopify.com/s/files/1/0432/0791/7729/files/asian_history_quiz_questions_and_answers.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007a29.bin
00ba4e09878fcc0ab52a309528a56aa7e6b00d7b163d0fac00bb890fbd102828		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A29 5292 bytes
font_01_sfnt_off00008c22.bin
4a072f21bac1d51965cd4989fe3f668ce97d89e22515a4df0571efa4b885890e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C22 10196 bytes
font_02_sfnt_off0000af19.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAF19 4324 bytes

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