Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b27ec421b256fdd…

MALICIOUS

PDF

47.3 KB Created: 2020-08-12 07:45:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 792604924a2f6f8459bf8e85b27d387a SHA-1: c936d9f2956542c763a8a9b6f6835d16a008a584 SHA-256: 7b27ec421b256fdd7910f1701903bcf498ede8df14779b609fac81b3acb969c5
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.com) known for malicious activity. The document body, though obfuscated, contains the same URL, suggesting a phishing or scam attempt disguised as a free download. 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.com/pify?keyword=list+of+borrowed+words+in+english+pdf In PDF document text
    • http://files.theteccas.com/uploads/1/3/1/4/131453946/ruzuj.pdfIn PDF document text
    • http://sexaxeje.masterfreight.co.uk/uploads/1/3/0/8/130873804/zibifidaxajudi-zoxexus-noladumal-jusivowema.pdfIn PDF document text
    • http://files.michaelsnowpresents.com/uploads/1/3/0/7/130740213/jadume.pdfIn PDF document text
    • http://debowugif.sacredgeometryalchemy.com/uploads/1/3/1/6/131606349/gabagulerof.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/19194700937.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8212/8283/files/97413940474.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9590/8761/files/76071245120.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6183/0037/files/muthina_kathirikai_movie_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6693/1862/files/92910999440.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5942/0063/files/construction_supervisor_license.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/libro_los_axiomas_de_zurich.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0660/7012/files/26162377595.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8652/8155/files/taradedetudi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8937/9993/files/58704205618.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/229905594.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1747/0101/files/capital_city_quiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0134/0319/files/49285745430.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B06 5056 bytes
SHA-256: f9607ee40942c8eff78b8f9bba4536e788552026b0e2bb4b1b6c453efccdac61
font_01_sfnt_off00007c38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C38 11156 bytes
SHA-256: ad08c108bc9ea0bdb4cd1854b1f1f5d80c2e6788811cf042fd14912e5335cd80
font_02_sfnt_off0000a217.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA217 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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