Malicious PDF — malware analysis report

Static analysis result for SHA-256 63fb8fd8f46fa9b2…

MALICIOUS

PDF

44.2 KB Created: 2020-08-04 06:52:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d78902582b61c5fbce5b346ee497f8d2 SHA-1: 496dc968cb61496e60c6c4fe72e26a20fddbd4c5 SHA-256: 63fb8fd8f46fa9b2dcf068db95fb259476ad57452a232a38368eb506b1d692ab
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely used to obscure the final destination of the malicious payload. The document body, though heavily obfuscated, contains text related to a 'property agency agreement' and includes the malicious URL, suggesting a phishing or scam lure. The presence of a large number of external PDF links, many pointing to benign Shopify domains, indicates a link farm used for SEO poisoning or to host further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • 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
  • 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.cc/pify?keyword=property+agency+agreement+pdf
    • http://files.philiphall3197.com/uploads/1/3/0/9/130969004/0e817874.pdf
    • http://files.chantellfoss.com/uploads/1/3/1/4/131454355/dadave_kapaxizewi_jujibamilenu.pdf
    • http://files.bythebible.org/uploads/1/3/0/8/130874451/2f67253ee1.pdf
    • http://files.acutepuncture.com/uploads/1/3/0/7/130775002/f26b0046171.pdf
    • http://files.myshinglesstory.com/uploads/1/3/1/8/131871670/wivelosebujefo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/64896238919.pdf
    • https://cdn.shopify.com/s/files/1/0437/0766/2504/files/pdf_editor_insert_pages_online.pdf
    • https://cdn.shopify.com/s/files/1/0428/3269/1363/files/welunaxudukerajidez.pdf
    • https://cdn.shopify.com/s/files/1/0449/7352/3112/files/moonlight_barry_jenkins.pdf
    • https://cdn.shopify.com/s/files/1/0431/2186/8960/files/nudigavesosis.pdf
    • https://cdn.shopify.com/s/files/1/0435/0381/2773/files/97948695353.pdf
    • https://cdn.shopify.com/s/files/1/0430/6573/7370/files/mumesu.pdf
    • https://cdn.shopify.com/s/files/1/0434/0570/5374/files/zaromusanovabowujokava.pdf
    • https://cdn.shopify.com/s/files/1/0432/1456/9631/files/how_to_give_minecraft_more_memory.pdf
    • https://cdn.shopify.com/s/files/1/0437/3495/8229/files/campbell_biology_10th_edition_ebook_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pedarivorenali.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e81.bin
0a8faad78fcbaa02114188decdb01f53cec3ec3493769a142bedecec0d70903f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E81 5368 bytes
font_01_sfnt_off000080bd.bin
f161591978f0b4ae0f241c6094974989fe5d0b5db096ab64ba218b45e23001d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80BD 10336 bytes

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