Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9f3ab410818633c…

MALICIOUS

PDF

41.7 KB Created: 2020-08-14 23:25:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 668dd15be53bd9ed37a027455d3d8779 SHA-1: 25da255cfd1013ccfcecb978214e14073849b1b2 SHA-256: d9f3ab410818633c5c5705db0a43a0f0a7afb536799beb3e8b852ea5eca3fb1d
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains a URL that matches this finding. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded links to external PDFs, many hosted on Shopify. The heuristic 'SE_URGENCY_LURE' suggests the document likely uses a pretext of account termination to compel users to click the malicious link.

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.com/pify?keyword=autodesk+3ds+max+education In PDF document text
    • http://files.studiosfinearts.com/uploads/1/3/2/6/132681204/zizaxovojenanamiliz.pdfIn PDF document text
    • http://files.nownotwhen.com/uploads/1/3/1/8/131856627/nepelabesigas.pdfIn PDF document text
    • http://wusugon.janessaannetolman.com/uploads/1/3/1/3/131398140/5797526.pdfIn PDF document text
    • http://files.jrlockandsecure.co.uk/uploads/1/3/0/7/130776503/90f75fc8a74d.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/1/0450/0835/5486/files/anthropocentrism_vs_ecocentrism.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7129/9999/files/69639291352.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9550/7622/files/lavazox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9162/4097/files/mubipu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57955619809.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6112/5013/files/tuvuxiditadirefuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3860/4450/files/darivusufedavigifuwamipak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0003/7527/files/arithmetic_formulas_in_telugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4868/1120/files/mukuwudixep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6245/1611/files/55913840128.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E7C 5244 bytes
SHA-256: 29ca9af0e19343b98a3aa1d09da4e95e46e325e70eff9fa4c64446fdd9066747
font_01_sfnt_off00007042.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7042 13120 bytes
SHA-256: 6171dc07d6a67e779d51d915ebb0f8899a90b3f64c3810a15d3766e07757843a

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