Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2d4651ea6cf1606…

MALICIOUS

PDF

44.3 KB Created: 2020-08-06 22:02:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a44512d26798bd78aa8af104dae606d3 SHA-1: 346686e1439a47cc31c471c3f2331b1a0b70ba44 SHA-256: b2d4651ea6cf1606be45e4712fdf7b08ead2a6337658c9e25a82606a20037c7f
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One prominent link redirects to a malicious URL on 'ttraff.com', suggesting a phishing or redirection attempt. The ML classifier also 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=understandable+statistics+9th+edition+solutions+pdf In PDF document text
    • http://files.merraephotography.com/uploads/1/3/2/3/132303151/5036752.pdfIn PDF document text
    • http://files.dianefelicejewelry.com/uploads/1/3/1/4/131453146/siburekerurazi.pdfIn PDF document text
    • http://files.flcleavenworth.com/uploads/1/3/2/7/132711966/dozunafida_lawiro.pdfIn PDF document text
    • http://files.lyc.ca/uploads/1/3/1/3/131379296/9432139.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/1/0433/6369/6799/files/selibarugumigokinaku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1305/4357/files/87163127102.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2530/0647/files/rosa_parks_outkast_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1531/5351/files/vermeer_sc252_service_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7751/0055/files/elements_of_econometrics_kmenta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8604/3541/files/lunitefexifiju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1240/7967/files/40818414887.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3002/7157/files/49689113116.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/4989/8399/files/alberta_rental_agreement_forms.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6609/6806/files/42479793632.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0006/2367/files/peliruwexofukejumupile.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2151/6448/files/gekekuresil.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 7

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_off00006c94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C94 5528 bytes
SHA-256: 29356a7cfb8af405b988a84aa2b7ee8841a0e6f5d1444fbf849127d5791af4ad
font_01_sfnt_off00007f53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F53 10820 bytes
SHA-256: 71f83c499f79d52f578a3bf1859212c5a36ef06daae155def2f87f0d0e76167f

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