Malicious PDF — malware analysis report

Static analysis result for SHA-256 4afe530f1b3879a8…

MALICIOUS

PDF

71.0 KB Created: 2020-09-14 18:56:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0267c6b897f4a694736a7f9dac09b796 SHA-1: f6f8c5bfdc879a24208f19e8482feb74850e11c8 SHA-256: 4afe530f1b3879a828060dd4cbb92441cf4f90bcb5ab997283dcfb256a19b6ee
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which point to PDF files with numeric slugs, indicating a link farm for SEO manipulation. One prominent link, disguised as 'drivers ed chapter 15 test b answers', redirects to 'https://ttraff.club/pify?keyword=drivers+ed+chapter+15+test+b+answers', which is flagged as malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness.

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.club/pify?keyword=drivers+ed+chapter+15+test+b+answers In PDF document text
    • http://files.staffdevjnkie.net/uploads/1/3/2/6/132696174/suduwavafegogububefi.pdfIn PDF document text
    • http://files.createwithease.com/uploads/1/3/1/6/131636987/c0fbb4.pdfIn PDF document text
    • http://zefoli.thaihouse.ca/uploads/1/3/0/9/130969953/tojuxorofone.pdfIn PDF document text
    • http://files.jjjohnsonauthor.com/uploads/1/3/1/4/131437268/lotoxaboxubuw.pdfIn PDF document text
    • http://files.meltingtundra.com/uploads/1/3/2/6/132681771/libugabagigad.pdfIn PDF document text
    • http://files.severnwildlifecarvers.net/uploads/1/3/0/8/130874394/gasanonozosowal.pdfIn PDF document text
    • http://files.yurrugarett.com/uploads/1/3/1/4/131437680/tuvufu_kukugadazagopo.pdfIn PDF document text
    • http://jipinoruv.jorgehuertaphotography.com/uploads/1/3/1/4/131438556/zogarife.pdfIn PDF document text
    • http://lufis.yelenasnovsky.com/uploads/1/3/1/0/131071157/maboda-ginirab-vaparevame-jafojirilag.pdfIn PDF document text
    • http://rudure.frostymeadows.com/uploads/1/3/1/4/131408071/323b0b593aa53.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/1/0430/8153/1541/files/61846940260.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/7677/9931/files/fasupulenixezal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1691/1010/files/hamlet_quotes_about_revenge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/3486/9661/files/73880632604.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5022/8119/files/42097376617.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9141/8526/files/dikavajedonoxizizazomop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9807/1450/files/18988190534.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_off0000d9f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9F6 5596 bytes
SHA-256: 2acc119ca494ae68c1688e964b69f99650fcc6d06093c47c6ba207baaed26d3f
font_01_sfnt_off0000ed15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED15 9856 bytes
SHA-256: ce693eab4599f22c4f436df1bbb162df1cfbf6ce8b9c16d17ac9dacb2bbaaddb

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