Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0c80ce451ec0aff…

MALICIOUS

PDF

40.4 KB Created: 2020-08-24 15:42:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b8091512fd693c76c3a785c5e218e593 SHA-1: e81146a2ebe114af888885e7e1a10b7047e013dc SHA-256: f0c80ce451ec0affed272e87de4742c60d057e79d1795c14b51e769463dffa3d
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be the same as the one identified by the heuristic. The presence of numerous external PDF links, many pointing to Shopify, suggests a link farm or SEO manipulation tactic to obscure the malicious destination. No scripts were extracted from this sample.

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=integrated+reporting+awards+in+sri+lanka In PDF document text
    • http://files.davisworldstudies.com/uploads/1/3/1/8/131856706/jizaxuzozozaza_didavitar_jedidu_poxepodefag.pdfIn PDF document text
    • http://files.govmation.net/uploads/1/3/1/1/131163777/5123569.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/1/0434/0521/3847/files/freaks_geeks_and_asperger_syndrome.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1400/3610/files/bollard_pull_calculation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4116/8283/files/68154275726.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0272/4506/files/27929526079.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9257/3334/files/8288378552.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/3337/0264/files/dads_worksheets_division_word_problems.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8671/5805/files/high_hopes_kodaline_piano_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86372263330.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1175/1588/files/71560889230.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 5

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_off00006052.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6052 5220 bytes
SHA-256: e70a8db4aee5efc2b05fdfb4358e2854e5227074be8ea1b5db05d206e49a68a4
font_01_sfnt_off0000722f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x722F 10180 bytes
SHA-256: a389941459c5e5cf3b02c15ea38a0731b0d6ccb30881e2b88b4fcdc39d23124c

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