Malicious PDF — malware analysis report

Static analysis result for SHA-256 20ab27465195cae4…

MALICIOUS

PDF

45.4 KB Created: 2020-08-05 04:38:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6599bd5bec194a7e62f1e773fefd6616 SHA-1: 47388dd2be82584dab6b177813ba234d9c39e568 SHA-256: 20ab27465195cae4bb4c1ae268be21bd11dc0338938ec58a879e25fa6ccb0254
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links, with one critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains text suggesting a lure related to 'Arnold encyclopedia of modern bodybuilding pdf'. The primary malicious IOC is the redirector URL, which likely leads to further malicious content or phishing pages.

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=arnold+encyclopedia+of+modern+bodybuilding+pdf In PDF document text
    • http://files.jonathanacollura.com/uploads/1/3/1/3/131398533/miniwavo_lovawuxonedari.pdfIn PDF document text
    • http://files.primary-eyecare-cornwall.co.uk/uploads/1/3/2/6/132695596/tofizasukusute.pdfIn PDF document text
    • http://files.psorted.com/uploads/1/3/1/3/131398094/fafot.pdfIn PDF document text
    • http://files.germangifthouse.com/uploads/1/3/1/4/131407668/9783010.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/1/0434/0721/2694/files/divekudojeluwexeru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5247/3243/files/runomuxujetu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4797/7114/files/sipigijejesogif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5314/6517/files/bourbaki_a_secret_society_of_mathematicians.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8731/4585/files/veluxowoxulawulipo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7580/6119/files/mexewonelerozogima.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3205/1873/files/fopikododejorogu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3110/9540/files/acrobat_reader_download_for_windows_10.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2874/1285/files/rut-_50.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1135/8372/files/49035321884.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8570/9987/files/zijanakurejoxadi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1525/6738/files/59876973859.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 6

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_off00007271.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7271 5528 bytes
SHA-256: 112ee2ccac1bb1cc013a4fa6e7e698b5f360a8836808b788024e719e89d3fdd2
font_01_sfnt_off00008535.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8535 10292 bytes
SHA-256: e906367d393c8a2ac918f2eabd110c05b4d53c9e60a196fe389af5c4d82f7fac

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