Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b6022d1a481b052…

MALICIOUS

PDF

38.9 KB Created: 2020-08-26 07:17:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ad15dd870eb4f4d15e270d7e7771ce13 SHA-1: 8932365a93a895f57fd1e5f2cd442b7092962570 SHA-256: 7b6022d1a481b0525997e4785c0e2780cb1b0de14cea85812b0782af215a730c
194 Risk Score

Malware Insights

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

The PDF contains multiple links designed to appear as a free download for a marketing textbook, but they lead to a redirector URL (ttraff.com). This redirector likely serves malicious content or further phishing attempts. The ML classifier strongly indicated maliciousness, and the presence of numerous SEO-optimized links points to a phishing or malware distribution scheme.

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=marketing+an+introduction+13th+edition+free In PDF document text
    • http://files.johntherev.com/uploads/1/3/2/7/132712198/5af91b35935b.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/1/0433/6241/8846/files/velidokixemuzazobimevusud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/wonazada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5470/1463/files/nadebizopudebufudax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5693/8664/files/58632903154.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/75901524911.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3095/3630/files/zasujomom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4216/9244/files/wegarasuzipakaxozabeses.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5247/4267/files/44685708269.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6202/4605/files/wokafasoxi.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 5

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_off00005844.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5844 5360 bytes
SHA-256: c657961f4267972b14b06be5c44bd01b4850eaa7c6f15128b79424a9ff68ad87
font_01_sfnt_off00006a8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A8A 10712 bytes
SHA-256: 440e561664db610c9ad625c3365d03b910374cbc1fc2f8db85d5ae3eaf21507d

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