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) First seen: 2026-05-09
MD5: d78902582b61c5fbce5b346ee497f8d2 SHA-1: 496dc968cb61496e60c6c4fe72e26a20fddbd4c5 SHA-256: 63fb8fd8f46fa9b2dcf068db95fb259476ad57452a232a38368eb506b1d692ab
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by an ML classifier and contains multiple links to redirector infrastructure, specifically 'ttraff.cc'. The document body, though heavily obfuscated, contains text suggesting a 'property agency agreement pdf' lure. The presence of a link farm with 16 external PDF links, many hosted on Shopify, indicates a coordinated effort to distribute malicious content. The primary malicious IOC is the redirector URL which likely leads to a phishing or malware download site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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 In PDF document text
    • http://files.philiphall3197.com/uploads/1/3/0/9/130969004/0e817874.pdfIn PDF document text
    • http://files.chantellfoss.com/uploads/1/3/1/4/131454355/dadave_kapaxizewi_jujibamilenu.pdfIn PDF document text
    • http://files.bythebible.org/uploads/1/3/0/8/130874451/2f67253ee1.pdfIn PDF document text
    • http://files.acutepuncture.com/uploads/1/3/0/7/130775002/f26b0046171.pdfIn PDF document text
    • http://files.myshinglesstory.com/uploads/1/3/1/8/131871670/wivelosebujefo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/64896238919.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0766/2504/files/pdf_editor_insert_pages_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3269/1363/files/welunaxudukerajidez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/7352/3112/files/moonlight_barry_jenkins.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2186/8960/files/nudigavesosis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0381/2773/files/97948695353.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6573/7370/files/mumesu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0570/5374/files/zaromusanovabowujokava.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1456/9631/files/how_to_give_minecraft_more_memory.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3495/8229/files/campbell_biology_10th_edition_ebook_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pedarivorenali.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E81 5368 bytes
SHA-256: 0a8faad78fcbaa02114188decdb01f53cec3ec3493769a142bedecec0d70903f
font_01_sfnt_off000080bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80BD 10336 bytes
SHA-256: f161591978f0b4ae0f241c6094974989fe5d0b5db096ab64ba218b45e23001d4