Malicious PDF — malware analysis report

Static analysis result for SHA-256 349e968784b823b7…

MALICIOUS

PDF

39.9 KB Created: 2020-08-07 07:02:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b76bc8cfb517f1d108b9333d8dfa873e SHA-1: 4694c568c7ddff795b9e82b4cc714ed7a2f275fa SHA-256: 349e968784b823b7df934eecf16c3a4fcd385b2d8836b2cdb0ffef64b393aa0e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm designed to manipulate search engine results, directing users to a malicious redirector. The primary malicious URL identified is https://ttraff.com/pify?keyword=adams+essex+calculus+a+complete+course+7th+edition+pdf. The document body, though heavily obfuscated, also contains this URL, reinforcing the lure. The presence of numerous external PDF links suggests a SEO poisoning or link farm attack pattern.

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=adams+essex+calculus+a+complete+course+7th+edition+pdf In PDF document text
    • http://files.tcworldseries.com/uploads/1/3/0/9/130969992/535947.pdfIn PDF document text
    • http://files.athwarthistory.com/uploads/1/3/0/9/130969527/kezinosemugedolalop.pdfIn PDF document text
    • http://files.cosigusa.com/uploads/1/3/1/3/131380728/lores-rixijixuf-winidopavokurit.pdfIn PDF document text
    • http://dowesexaf.kierstenmodglinauthor.com/uploads/1/3/0/7/130739024/bavil.pdfIn PDF document text
    • http://files.chsmarinesurvey.com/uploads/1/3/0/7/130738657/wisoxalovazesawe.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/22411539251.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8845/4559/files/talutorelidamigemajutoji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4146/5244/files/tewewened.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6745/7182/files/bowonixabukelotu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5491/6006/files/55784176484.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8941/2767/files/wexatujinam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2585/8714/files/bifewosowugopobip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/17810153535.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4124/3814/files/chipotle_catering_prices.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/62114329075.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0596/8537/files/43067708299.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 3

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_off00004efc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4EFC 5412 bytes
SHA-256: ac05ea3a7d7f50213d5bf966e7485c2c836c9f4fe46f37175679895d99d9b319
font_01_sfnt_off00006149.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6149 10036 bytes
SHA-256: 8265a554b4eaab6db5d350f07357570f774f2c8bf9415ad1463a1e3d2384406a
font_02_sfnt_off00008393.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8393 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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