Malicious PDF — malware analysis report

Static analysis result for SHA-256 2976fb41238198cf…

MALICIOUS

PDF

38.6 KB Created: 2020-08-05 12:53:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 34e4d21928675f6ea1076745cfad6632 SHA-1: 31790a072ef61e3a57e7fdc25d1c98425a475fab SHA-256: 2976fb41238198cfd933b32b2bd236d64b235902cbf1a048db0ed4089328bf57
194 Risk Score

Malware Insights

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

The PDF contains a link farm and a direct link to a known malicious redirector, disguised as a service manual. The ML classifier strongly indicates maliciousness. The primary attack vector appears to be social engineering via a deceptive document, leading users to click on the malicious URL.

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/wb?keyword=eppendorf%20centrifuge%205415c%20service%20manual In PDF document text
    • http://files.roberta-ricci.com/uploads/1/3/0/7/130738740/95794c.pdfIn PDF document text
    • http://files.lindajmann.org/uploads/1/3/2/3/132303226/mebidutixizelemajuwe.pdfIn PDF document text
    • http://files.futfemuniversal.com/uploads/1/3/2/6/132681156/4129992.pdfIn PDF document text
    • http://files.henfieldthenandnow.net/uploads/1/3/1/4/131438761/rixoxasogite.pdfIn PDF document text
    • http://files.jshel.co/uploads/1/3/1/4/131454523/1462010.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/1/0432/0477/2000/files/3183605484.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4664/1570/files/86934474853.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3729/4745/files/14781011475.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6209/8085/files/88504781504.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6591/8118/files/tenafawagojozoninuxagesur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3471/9909/files/loluninipi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9628/6111/files/wadod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/85286147205.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3820/2273/files/lemesabo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5697/2455/files/52356636583.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3019/8937/files/32073600761.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8246/4928/files/5263752914.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_off000057a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57A0 5756 bytes
SHA-256: b7b9ce99fe1cbf996ff3708d1418a8c5be2f4b84f3e9309c27e9590812450006
font_01_sfnt_off00006b44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B44 9952 bytes
SHA-256: 2961dc6ce727d05fe286ad3918dd1a41e85de13c078cadc58b540343b68887b2

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