Malicious PDF — malware analysis report

Static analysis result for SHA-256 21c29b9c7c127591…

MALICIOUS

PDF

44.6 KB Created: 2020-07-31 18:15:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2641fdaf5c5fd42dfba759efbc8e52b2 SHA-1: c4931784aeb5f903c9f1361f61d095054f161a74 SHA-256: 21c29b9c7c127591d334c032d0110811761f623b071b27b8f0a478f55c7894d7
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, many pointing to redirector infrastructure like 'ttraff.com', suggesting a link farm or phishing campaign. The document body text, though partially corrupted, includes the phrase 'Toshiba boot from usb', indicating a lure to entice users to click the malicious links. The ML classifier strongly flagged this PDF as malicious.

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=toshiba+boot+from+usb In PDF document text
    • http://files.viewpointvideos.com/uploads/1/3/1/6/131606256/0947b7.pdfIn PDF document text
    • http://files.laryssachan.com/uploads/1/3/0/7/130775784/memikelupira.pdfIn PDF document text
    • http://files.parlorhairboutique.com/uploads/1/3/0/7/130776067/depopufokexefu_bifijemi_venetoxasoxuna.pdfIn PDF document text
    • http://files.dehoniansocialjustice.org/uploads/1/3/1/1/131164020/tejaj.pdfIn PDF document text
    • http://files.laurenkimak.com/uploads/1/3/1/0/131069992/tosutupesuwedib-joliti.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/1/0430/9227/9445/files/94210773121.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5932/8662/files/81148283227.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5556/2398/files/dufekebirabedasalufexirub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7686/1606/files/mafixujofekijigokig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6415/6575/files/88716273565.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8781/4044/files/29545358279.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8251/3561/files/kavudoboxabu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3591/8489/files/42553314841.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6214/0840/files/putovuravipemigekobig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9147/6133/files/selolaretilitigejov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9672/7962/files/39677204310.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3910/4917/files/zadovesovujokobowobupovo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1855/0439/files/guxakatoxibi.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_off000072c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72C2 5064 bytes
SHA-256: 1fbdb65555cbc2310f462af884e96fd72e57a9a14511e854c3c6b28789a2c43d
font_01_sfnt_off000083ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83CE 9932 bytes
SHA-256: e13d07298046c5735756162b3a6f8a82acab0510b8eb0c48273613ca5b1ad5ce

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