Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0c342d7ed156f6d…

MALICIOUS

PDF

44.8 KB Created: 2020-08-24 01:10:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d1b83dd6b5cbdb0d71739233689b8479 SHA-1: 3a59e93345b857db03064ad285789c00fad913e4 SHA-256: c0c342d7ed156f6d26e13b7a2ff2410cf1e27129fb544b65b1c368d96f6cee41
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF document employs a lure of a "Latex template thesis proposal" to encourage users to click embedded links. These links predominantly lead to a redirector service, which in turn points to various PDF files hosted on Shopify and other domains, suggesting a link farm or phishing campaign. The ML classifier strongly indicated maliciousness, and the presence of numerous external links, including a primary redirector, supports a high confidence assessment.

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=latex+template+thesis+proposal In PDF document text
    • http://files.gandtsales.com/uploads/1/3/1/4/131454699/dadirepokujulo.pdfIn PDF document text
    • http://files.milissweetstogo.com/uploads/1/3/2/7/132740804/valasu-vezimopoga.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/1/0433/9138/5758/files/zamerogog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9322/1783/files/gadotexijuvuvubopop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7036/5589/files/2523556936.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/5803/6641/files/reformation_bonita_dress_black.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0204/4316/files/90673451911.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3778/5240/files/navemedetipogiwesil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0650/8701/files/jeser.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8056/4392/files/los_patitos_feos_boris_cyrulnik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6725/1617/files/koraluwaredapuwiki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8180/1629/files/faraxadipemufogatab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6400/7585/files/c_deck_of_cards.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7962/1026/files/best_forex_technical_analysis.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_off000063f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63F8 5068 bytes
SHA-256: bbd702a67828504e65484b6fda93106ea95b3ce17febb7e9611883b596923065
font_01_sfnt_off00007515.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7515 15844 bytes
SHA-256: 446cc4e28277c2d5ee36dd9aa52de22c3afcb9722919f6433ce2f5fc79b0eb5d

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