Malicious PDF — malware analysis report

Static analysis result for SHA-256 80e2e68d68680cfb…

MALICIOUS

PDF

60.8 KB Created: 2020-08-09 22:41:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 475ff8a4044f5b8cb7f357fa407e4694 SHA-1: d4964f041a4aa0d39dae047d57dfcba30d751a91 SHA-256: 80e2e68d68680cfb08adbda47c56fe54bb0df063bdb5e0e7cb410e187e15995a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains multiple embedded links that redirect to a malicious domain, identified as a redirector for SEO-based phishing. The document body, though heavily obfuscated, contains a URL that appears to be the primary lure. The ML classifier and heuristics strongly indicate malicious intent, likely to trick users into downloading further malware or visiting malicious sites.

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=antennas+and+wave+propagation+by+bakshi+pdf In PDF document text
    • http://files.theremnantknoxville.org/uploads/1/3/1/1/131164431/1382205.pdfIn PDF document text
    • http://gokabixam.hollyspoodles.com/uploads/1/3/1/3/131398091/5543829.pdfIn PDF document text
    • http://files.qualityfolk.com/uploads/1/3/2/7/132740424/813732.pdfIn PDF document text
    • http://files.skyviewwa.com/uploads/1/3/0/8/130873717/tefuvemodixol-nebidimeno-kafujur.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/1/0431/9812/0096/files/soxapiwevuzorazuxanif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7704/9247/files/47302540261.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1277/6351/files/76847570037.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8570/1019/files/89566458207.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8119/5927/files/attunity_replicate_user_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3934/2248/files/total_gym_ultra.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7366/7225/files/34019774657.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3057/6278/files/50784398787.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5537/2695/files/tozenuba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1175/1579/files/99584825116.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4046/3255/files/pdf_file_format_structure.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 4

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_off0000ae7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE7C 5716 bytes
SHA-256: d8302bbe3a01a95734799e9bff703426b4e94f75779e8822931009c0ffc66d51
font_01_sfnt_off0000c20d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC20D 10400 bytes
SHA-256: 025ca66f4ad1df500059ebd522e7dc7bfd3748d6864b5bcf4b3780ccfaab6497

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