Malicious PDF — malware analysis report

Static analysis result for SHA-256 67816e5836dd2023…

MALICIOUS

PDF

42.9 KB Created: 2020-08-13 21:50:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6b48d65bdc69c556068d51feb9ada0d0 SHA-1: 8efe930154e3472abba9c7444c4350c3e17b0bf5 SHA-256: 67816e5836dd2023a773e73aa46f30c34e7fbab0415ad790d6e1144e6a9adbb3
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many of which point to a redirector service (ttraff.cc) known for malicious activity. The document body, though partially corrupted, includes text suggesting a 'free download' lure, which is a common phishing tactic. The presence of a large number of external PDF links, many hosted on Shopify, indicates a link farm designed to obscure the ultimate destination and potentially spread malicious content. No scripts were extracted, but the primary attack vector appears to be social engineering via deceptive 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.cc/pify?keyword=jogos+para+uma+aprendizagem+significativa+pdf In PDF document text
    • http://files.greatalnefolk.org.uk/uploads/1/3/1/1/131163684/099c931bf4f0.pdfIn PDF document text
    • http://files.anugerahbaptistchurch.org/uploads/1/3/0/9/130969874/tefulewixafores.pdfIn PDF document text
    • http://gabij.bassreevesconference.com/uploads/1/3/1/3/131381612/19494ebed57bb.pdfIn PDF document text
    • http://sijojivog.eskotrails.com/uploads/1/3/1/4/131453850/sejubafalezelakivisu.pdfIn PDF document text
    • http://peranume.leducdramasociety.ca/uploads/1/3/0/8/130874493/5410720.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/1/0430/6511/4775/files/japupasatenakal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3234/4736/files/muzoku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8014/5313/files/gobud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/93861148098.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0965/4436/files/86135120927.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/aditya_hridayam_stotram.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7447/7464/files/zukusinawigedokesat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8812/4829/files/10684896769.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2137/5387/files/fap_titans_cheats.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4887/7736/files/pewuvejogejanuvuju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7931/1253/files/8445347991.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4914/7816/files/jedopuliwis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5857/7046/files/34078282625.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/0250/6909/files/effectiveness_of_celebrity_endorsement.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000053cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53CF 5424 bytes
SHA-256: 6188db2303c73559fcf1fe3890f74ec724a1125deceaeeb0b66034b4d82a9101
font_01_sfnt_off0000663f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x663F 14024 bytes
SHA-256: 57870541c71f850105f89331976426d77e029f99c3ab6bb2631676591ce9fd1c
font_02_sfnt_off00008e1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E1E 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333