Malicious PDF — malware analysis report

Static analysis result for SHA-256 79b4093c0d7bd0b9…

MALICIOUS

PDF

48.3 KB Created: 2020-08-14 07:00:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 32ae102ad80a9069ab975dc0265d10c0 SHA-1: 3f350b27d0ef3529a5c5a29ab465771703b86fe8 SHA-256: 79b4093c0d7bd0b90fc470bd6301284022c713447dd130b7b309429a236667ee
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector, suggesting a phishing or malware distribution attempt. The document body, though partially corrupted, includes text related to a 'Cessna 152 aerobat flight manual' and the URL that triggered the malicious redirector, indicating a lure to entice clicks. The presence of multiple embedded links to external PDFs, some hosted on Shopify, further supports the SEO link farm tactic.

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=cessna%20152%20aerobat%20flight%20manual In PDF document text
    • http://desevose.floridalivesound.com/uploads/1/3/1/4/131406709/jajugiwox.pdfIn PDF document text
    • http://files.gretchendriscoll.com/uploads/1/3/2/7/132740951/1b04c.pdfIn PDF document text
    • http://fezowux.beingwithcounsellinglondon.com/uploads/1/3/0/7/130775432/be440f0260c8c.pdfIn PDF document text
    • http://zubuma.elkhornpenguins.com/uploads/1/3/1/6/131606490/5873874.pdfIn PDF document text
    • http://files.chiyoungkim.com/uploads/1/3/0/7/130739850/2604059.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/1/0431/2200/0029/files/tajuzojeriguvefo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7988/4195/files/penepukonobokubonel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9372/1255/files/lokale_nderungsrate_aufgaben.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0885/2117/files/tunujizozox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6012/4061/files/6788102344.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4492/0726/files/dariradexugomogozow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5395/5742/files/vobalapemixuxukegipad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2865/9870/files/bojelebazizofopitorokazek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6965/1606/files/57278438643.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/9154/6532/files/36071906549.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3493/5447/files/cateterismo_umbilical_neonatal.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_off00007574.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7574 5532 bytes
SHA-256: 54deeba2b5dde1b2fd26b606fce1c23c3293e0415dc0dfd3418131ef978b7b0c
font_01_sfnt_off00008820.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8820 14416 bytes
SHA-256: e56da3d081b8748d7fe88d96ddc1167e89939ed39cc5b1d6b13349bfc61149aa

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