Malicious PDF — malware analysis report

Static analysis result for SHA-256 82f21f35c6d74947…

MALICIOUS

PDF

51.3 KB Created: 2020-08-20 18:03:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: af1af3a31e30137bbe9cde8fd3fe7337 SHA-1: ebf7c0db3332155fe3fb0a032aadfc02b376ce60 SHA-256: 82f21f35c6d749473fb4639915475f764e33c16446d1d04c92e286b3b205143d
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirection and link farming, specifically pointing to 'ttraff.com' as a redirector. The document body, though heavily obfuscated, contains the same URL, suggesting an attempt to disguise a malicious link as a tutorial. The presence of numerous external links, many pointing to Shopify, further supports the SEO link farm and free-download phishing lure.

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=vb.+net+crystal+report+tutorial+pdf In PDF document text
    • http://files.kerenzaltz.com/uploads/1/3/2/6/132695832/1e41a73.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/1/0436/8223/4521/files/65076038267.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5080/3099/files/94711161573.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2643/8550/files/facebook_cover_photo_template_mobile.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4659/8821/files/pisogulivowurakon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3672/8726/files/vemuxumux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7451/8180/files/mabinogi_musical_knowledge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7967/7590/files/roxasebavepolimu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8861/8396/files/livros_apocrifos_baixar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0866/3456/files/tofesadosudipiginimozewo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7643/5621/files/loxibadinipono.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5721/7693/files/55270812362.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7803/3313/files/xananupowotog.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_off00008b81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B81 5388 bytes
SHA-256: 3e8f662a42e3df81a8c56d5c2ad9cf18e5670d74f3e7708c2c3cb5e4327f07c2
font_01_sfnt_off00009de0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9DE0 10024 bytes
SHA-256: eac7b1057f9d23d55050279b5b7adc9087ea814f6739bffed45441a41020a976

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