Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d98810f35b19e48…

MALICIOUS

PDF

43.6 KB Created: 2020-08-18 14:42:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: aeba611991511e4b54a68f85d63809d1 SHA-1: 999710007690541cc832e5dcba8c4b2236a47033 SHA-256: 4d98810f35b19e484f30ed825cb27d8a230e9705b36acdf3d108d9a083a2f643
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a deceptive document body and a large number of embedded links, many of which point to Shopify-hosted PDFs. One critical heuristic indicates the primary link leads to known malicious redirector infrastructure. The ML classifier strongly supports a malicious verdict. No scripts were extracted, but the link farm and redirector suggest a phishing or content-luring attack.

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=capacitor+ceramico+103+datasheet In PDF document text
    • http://files.pucherosoundmachine.com/uploads/1/3/0/7/130776141/9036480.pdfIn PDF document text
    • http://files.mrowslater.com/uploads/1/3/1/6/131606789/8986185.pdfIn PDF document text
    • http://files.ipksportsbetting.com/uploads/1/3/0/8/130813325/vexitijupogobevuwura.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/1/0429/7257/7946/files/maxupeseviv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1917/9944/files/boris_cyrulnik_libros.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5813/3152/files/51656356499.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3121/5780/files/rirumiluteropugarude.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7881/1797/files/24706794067.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3604/7525/files/plague_inc_evolved_necroa_virus_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0516/5216/files/54547920903.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9961/7448/files/ropusoloxawijozovosuxapi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9751/3381/files/34592824220.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3504/9640/files/blouse_cutting_and_stitching_in_tamil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/74039562291.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 6

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_off00006631.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6631 5544 bytes
SHA-256: dba00f0f4c754787520cba4d179052139d30bb785b4f46c82d27400f682e6671
font_01_sfnt_off000078e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78E1 12704 bytes
SHA-256: c607c048c7289476bfa2d94cb0ddd434030c160c9cc68db6619e5c57c24724b0

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