Malicious PDF — malware analysis report

Static analysis result for SHA-256 4907b487e8696ea5…

MALICIOUS

PDF

47.5 KB Created: 2020-08-10 12:45:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f8a928b1ff71ed795a3d2a2d507b641c SHA-1: 125ea6cae2ed887bb84503201367362dfbb52f57 SHA-256: 4907b487e8696ea517a5a63a0a776fffdd8e8e319494f604b3555db145442ee3
194 Risk Score

Malware Insights

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

The PDF contains embedded links, with one pointing to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to lure the user to malicious infrastructure. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm strategy, likely for SEO poisoning or to obscure the final malicious destination. The ML classifier strongly flagged this PDF as malicious.

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.
  • 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.
  • 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=c+programming+algorithms+examples+pdf In PDF document text
    • http://files.darajamusicinitiative.org/uploads/1/3/2/7/132710683/gizuvuxab_galipo.pdfIn PDF document text
    • http://files.workscapeartisans.com/uploads/1/3/2/6/132680986/1281410.pdfIn PDF document text
    • http://files.mackofsales.com/uploads/1/3/0/7/130739076/xixag_forir_zusivur.pdfIn PDF document text
    • http://borotum.salidacanews.com/uploads/1/3/1/0/131070374/mazulanowisotar.pdfIn PDF document text
    • http://menuwab.btnmusicfestival.com/uploads/1/3/0/8/130814328/4501373.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/1/0429/8627/4977/files/bozuwosoke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9091/1137/files/mcs_90_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1538/0892/files/foleveniwopetokaguru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7361/7568/files/49351694011.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9058/3464/files/gixexujoratebi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8225/2442/files/63251456543.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3928/4645/files/rusimudawirorez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8706/9348/files/21801339090.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4112/6565/files/89830407594.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5312/0664/files/joxepifenavugupa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9151/5805/files/asciidoctor_set_theme.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 4

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_off000078ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78FF 5428 bytes
SHA-256: 0b091646a1226d050edf29b0b11f011d59ed02d5f0b85f12f2046a81c524ea09
font_01_sfnt_off00008b4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B4D 11332 bytes
SHA-256: f7c53d0099d252763f6e77815c6fb2fb5add9d77c07ac22025050e4c8e8aaf14

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