Malicious PDF — malware analysis report

Static analysis result for SHA-256 4279603252088888…

MALICIOUS

PDF

44.1 KB Created: 2020-07-31 01:34:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3dd4adbda9a7d646c852734a37ead28e SHA-1: 47a091f27dee927ca9a34feb0aa85e4fd5fa6278 SHA-256: 42796032520888886e0ccfcfb43d3ed88b56ff36a6bca98082f6330c52fa7154
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains multiple heuristics indicating malicious intent, specifically linking to a known malicious redirector and employing a link farm strategy. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool sometimes used to create deceptive documents. The primary malicious IOC is the redirector URL, which likely leads to a phishing page or malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=hbs+case+book+filetype+pdf In PDF document text
    • http://files.geoffgoodsonhorsemanship.com/uploads/1/3/1/6/131607010/fd34d85184.pdfIn PDF document text
    • http://files.aikenkraft.com/uploads/1/3/1/3/131397971/tagiduxoxam-bukedikato.pdfIn PDF document text
    • http://files.vandalsgames.com/uploads/1/3/0/7/130738614/zerari.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/1/0431/1675/7153/files/nowanirisuzenewejev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1952/5534/files/30026343406.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6388/6495/files/71152768859.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6408/1046/files/86627530364.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5702/8001/files/xovenama.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2756/9576/files/pizugamufepiwefetigi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9650/5496/files/keroworipedos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6915/3181/files/gedefapisoxilixafojuzosiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8990/3259/files/bazoviloxomiguxitezide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7929/5383/files/8740435294.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1344/7584/files/95971220543.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6678/5949/files/zevukagosozufidodoj.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_off00007051.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7051 5000 bytes
SHA-256: d5ce66f64ee776dd52cd8b92a8546c05064712f3e43fab88afb8b51b132c8d5b
font_01_sfnt_off0000815a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x815A 9988 bytes
SHA-256: bd7fe983c4c0219abee8708fb9ba5148892cfd74f0d97cb60913ef566ae242ac

Open this report in the interactive analyzer, or submit your own file for analysis.