Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ff33c148d105917…

MALICIOUS

PDF

53.0 KB Created: 2020-08-14 04:45:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 241da67a76c861bab59328539be1532a SHA-1: 7a5ba6df890829e3d48564f28d274346613b7fcd SHA-256: 4ff33c148d10591721989e5291d7d6127695e181d6b4262af28dcfcfa23e7e68
194 Risk Score

Malware Insights

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

The PDF file contains a high number of embedded links, many of which point to a link farm hosted on Shopify. One of these links redirects to a known malicious domain (ttraff.com), indicating a phishing or redirection attempt. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the primary attack vector appears to be the malicious redirection links.

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=precision+sheet+metal+works+pvt+ltd+tumkur In PDF document text
    • http://teluwofad.pickwyck.com/uploads/1/3/2/7/132712415/6940962.pdfIn PDF document text
    • http://files.nxtgenerationenergy.com/uploads/1/3/2/7/132740415/sodegebu.pdfIn PDF document text
    • http://files.doodadsandfandangles.com/uploads/1/3/2/6/132680901/ronifawodizod_setupuvosukuf_wewofokodefeju.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/1/0440/4455/0294/files/genegunefipiku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5395/5742/files/totapejasuga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3885/0719/files/ravotaxeluze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2358/8773/files/around_the_world_in_80_days_by_jules_verne.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/9605/9547/files/36._952746_86._513166_435_university_blvd.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5156/4707/files/46500793830.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1618/3205/files/bawuwururud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3971/8552/files/wujanivavivodazativofok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9074/6271/files/lowes_watson_blvd.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/viborovikumowenaben.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0092/2261/files/76820505853.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0213/3671/files/94236683426.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6150/0309/files/lomof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4586/2041/files/lunemu.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_off000092fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92FA 5532 bytes
SHA-256: 64557fbec81a810ff16f32eda90921e64f7b4a41774406b0313662b616f232c2
font_01_sfnt_off0000a5a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA5A9 9664 bytes
SHA-256: 3d8dee03775c80a5c0e37b23c3905732d1b7e6e93655978c673dbf3bef01de3f

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