Malicious PDF — malware analysis report

Static analysis result for SHA-256 1397a0fb1a9fb4f6…

MALICIOUS

PDF

43.5 KB Created: 2020-08-02 13:22:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 094e6ec5d5d2699a62042ccb026982f4 SHA-1: f91bbbc4ac528a4db8836e8dcce22375f149bb9d SHA-256: 1397a0fb1a9fb4f6e4110b0efa899be6a5706766bbde85590f5d7b20ae8b253a
194 Risk Score

Malware Insights

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

The PDF contains numerous links designed to appear as legitimate book downloads but redirect to a malicious URL. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM indicate this is a link farm used for phishing or malware distribution. The embedded URL https://ttraff.cc/pify?keyword=art+a+brief+history+5th+edition+pdf is a known malicious redirector.

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=art+a+brief+history+5th+edition+pdf In PDF document text
    • http://files.amistadschool.org/uploads/1/3/1/4/131483138/0c6124aaa65.pdfIn PDF document text
    • http://files.quekjiaqi.com/uploads/1/3/0/8/130813923/xasuxudeso-zuvem-xoganuranoludoz-suwonu.pdfIn PDF document text
    • http://files.krisbenyopottery.com/uploads/1/3/1/3/131379396/0bd30.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/1/0434/5089/2440/files/zovovuwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xakuxosisubesabemobaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8022/8759/files/writing_better_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9926/8003/files/lusapalisonozuwewali.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0687/0183/files/xugagutaresasubov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2296/5160/files/bovodopo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0192/1184/files/18854490673.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7354/9974/files/61724399708.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2258/0886/files/14787481862.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zekimopesafirizaxos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4470/9276/files/33034963112.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 2

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_off00006b56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B56 5452 bytes
SHA-256: e4856b4506ce8982966731843c9f00e2e7d217c0cf0ee786162c867681a68da9
font_01_sfnt_off00007de6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DE6 10616 bytes
SHA-256: 6bae7259e9d3ab9e5bc7b038ce502463c3d409e88be4efddc141015e51a03d98

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