Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b397c71bb5c9beb…

MALICIOUS

PDF

42.2 KB Created: 2020-08-12 20:58:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 60ca46fc8389912fbc5571f841549add SHA-1: 02c744fd7b36287a3616bbeaebfcbb1af4e96546 SHA-256: 7b397c71bb5c9beb3a998b0e476d4968b2fe94ab9481fabcefd745d7c1aa5a18
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, many of which are hosted on Shopify and appear to be part of an SEO link farm designed to attract users searching for free business English PDFs. The primary redirector URL, 'https://ttraff.ru/wb?keyword=anglais%20des%20affaires%20pdf%20gratuit', is flagged as malicious and likely leads to a phishing or malware download page. The ML classifier strongly indicates maliciousness, supporting the conclusion that this document is part of a malicious distribution campaign.

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.ru/wb?keyword=anglais%20des%20affaires%20pdf%20gratuit In PDF document text
    • http://files.lovenirvanayoga.com/uploads/1/3/0/7/130776485/ninidugego.pdfIn PDF document text
    • http://files.littledarlingscookieco.com/uploads/1/3/0/9/130969389/nodisedozininug.pdfIn PDF document text
    • http://files.adrianaspina.com/uploads/1/3/1/3/131378838/835a7d092291.pdfIn PDF document text
    • http://luvev.theempowermentperspective.com/uploads/1/3/1/8/131871721/4696459.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/1/0431/6859/6123/files/zuwulawolegusubevozagula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3733/5464/files/xifudaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6849/7823/files/70939787037.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2775/1321/files/46698250313.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0982/4152/files/lebakamuxubukanu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5806/9655/files/37974879126.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6896/2469/files/72454449140.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2865/9874/files/negidasagol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/46192140698.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4645/2899/files/atos_institucionais_ditadura_militar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4742/9031/files/sivalobonozal.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 8

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_off000064a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64A2 5200 bytes
SHA-256: f7ac42a007c8fba845f926282e629a20b04d409e17873fa5716560e001317e53
font_01_sfnt_off00007659.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7659 11628 bytes
SHA-256: 5aa218a673524fce2fcee71c871fc8cd2caeb7e547e9df117ae15e90a7d875c7

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