Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c75a822801dfef7…

MALICIOUS

PDF

246.4 KB Created: 2020-08-18 19:10:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e7726038fef6241b5d7ec316acd78e6b SHA-1: 6d2c539d5b879847b14718a88c1f85823d2ee70d SHA-256: 5c75a822801dfef7157122de70f344e0d298152d6807026d61df57531df28bc8
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains heuristics indicating it is a malicious redirector and employs an advance-fee scam lure, suggesting a phishing or social engineering attack. The embedded URL points to a known malicious redirector, likely intended to lead the user to a further malicious site or download. No scripts were extracted, but the PDF structure and embedded URL are strong indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 5

  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.com/pify?keyword=guidelines+nstemi+2015
    • http://files.abmodelmaking.com/uploads/1/3/0/8/130874010/9901382.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/0306/0128/files/72511965333.pdf
    • https://cdn.shopify.com/s/files/1/0430/5652/9557/files/19213584215.pdf
    • https://cdn.shopify.com/s/files/1/0432/7853/2774/files/tifogelakoj.pdf
    • https://cdn.shopify.com/s/files/1/0439/9346/4990/files/zegewofif.pdf
    • https://cdn.shopify.com/s/files/1/0439/3664/5275/files/14810110031.pdf
    • https://cdn.shopify.com/s/files/1/0435/6079/6318/files/nugokesibu.pdf
    • https://cdn.shopify.com/s/files/1/0429/5901/2006/files/saccharomyces_cerevisiae_fermentation.pdf
    • https://cdn.shopify.com/s/files/1/0439/7613/0718/files/wutiwamusoboxux.pdf
    • https://cdn.shopify.com/s/files/1/0430/1294/8121/files/petuvato.pdf
    • https://cdn.shopify.com/s/files/1/0428/5258/1542/files/woolworths_homebrand_dishwashing_liquid_safety_data_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0430/4352/0666/files/75882970903.pdf
    • https://cdn.shopify.com/s/files/1/0429/9633/4753/files/draft_letter_template.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/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00037119.bin
4330fad4058c97ca6380668759544a83fed23d496093fc5b80028bc5bcc6cb39		 pdf-font-stream PDF embedded font (sfnt) at offset 0x37119 5148 bytes
font_01_sfnt_off00038293.bin
218dec5b4735b87a7b28136d29b6b3db125465585b85f0fabd9e13e47869c5c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x38293 16384 bytes
font_02_sfnt_off0003b599.bin
43dd7310e986e37c0562d6efd2a67b6291a0d41fa892ecd43b306c3e7231f7b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3B599 16148 bytes

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