Malicious PDF — malware analysis report

Static analysis result for SHA-256 80c0ad2d534c3279…

MALICIOUS

PDF

51.2 KB Created: 2020-08-07 03:27:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 85188dd79853cf6e75192de40b138b2b SHA-1: 52f8a2af1989db3878da4819a928f49dc72259c7 SHA-256: 80c0ad2d534c32794bcc778f5a341988b2b1bc4795098ed38d59dcd04aaba9f4
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with one specifically identified as a known malicious redirector. This redirector points to a URL that appears to be part of an SEO link farm, likely designed to trick users into downloading further malicious content. The ML classifier also strongly indicated maliciousness.

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=china+s+belt+and+road+initiative+five+years+later+pdf In PDF document text
    • http://files.personalspaceproject.com/uploads/1/3/2/7/132740343/piwepapefa-kavijabojexopi-fuwuwumewa.pdfIn PDF document text
    • http://files.jazzlegaspi.com/uploads/1/3/1/4/131452735/3307c7392784b.pdfIn PDF document text
    • http://files.andriopoulos.org/uploads/1/3/1/4/131452935/995b2254b090.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/1/0434/4007/9005/files/37680526969.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9707/1524/files/xuvuwanulakagolu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2351/5294/files/osnove_automatskog_upravljanja_knjiga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5195/8947/files/tuzonexilamemivar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/66166766468.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3400/2086/files/nadegonerat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0517/3147/files/wolf_gang_puck_food_processor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57032902602.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2702/7352/files/94406959342.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8622/3262/files/papizopuvonewamezinovefe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8531/5737/files/97779523877.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0133/1360/files/gitivusawita.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_off000089e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89E8 5336 bytes
SHA-256: 1e76da04441ed2e1b62f22a623c1fe05c809ff9af8fdfbe953ee15403ed2d8a0
font_01_sfnt_off00009c0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C0B 10564 bytes
SHA-256: eaf752f423860c889fa1cc4862984887f472d1fbcecab5af4a28b1901d18a179

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