Malicious PDF — malware analysis report

Static analysis result for SHA-256 b334930b8f6f027e…

MALICIOUS

PDF

48.9 KB Created: 2020-07-29 20:58:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9ccb55cf4d447b7a927dcbc9c21a0e68 SHA-1: 5486857b1cae24a76974adaf2af61bf97498dab3 SHA-256: b334930b8f6f027e4bce2bf2ea6762a9f4e06432fcec5a383fff51c7191c7d90
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body, though heavily obfuscated, appears to be a lure related to a 'fluid mechanics book pdf'. The presence of numerous external links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to drive traffic to malicious sites. The ML classifier also strongly indicated maliciousness.

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=fluid%20mechanics%20book%20pdf%20by%20rk%20rajput In PDF document text
    • http://files.sexualwellnessinstitute.com/uploads/1/3/1/3/131383821/loxebotebare.pdfIn PDF document text
    • http://files.thesilkfamilyproject.com/uploads/1/3/1/4/131437740/livig.pdfIn PDF document text
    • http://files.one5collective.com/uploads/1/3/1/8/131857270/sisepapojigiben-wufaveput-felusul.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/1/0431/8186/7176/files/31233646794.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9744/6818/files/86620056508.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3004/4062/files/vurigesoruki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4716/5850/files/5705574669.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3798/0834/files/fotukenekijove.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4333/2000/files/66075660577.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6849/6798/files/42689268870.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6990/6852/files/29277218522.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6730/2295/files/vinutexiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1713/4502/files/gezesifogoxuxoremezim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2008/2590/files/boxomixugok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6544/1430/files/pedogana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4777/9478/files/5757402137.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6410/6901/files/66671350995.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006962.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6962 5612 bytes
SHA-256: 14d62bb451e256cb7213c4f4219fc5f25888c8dd9094b0a9523ba2124a583aed
font_01_sfnt_off00007c3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C3E 2116 bytes
SHA-256: 33d80b5e357abfa3ea91f5eff18928953f8e36d8e9a7aea158c838e8ae756dd9
font_02_sfnt_off00008608.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8608 15008 bytes
SHA-256: 7d726e7f5da2bf774fa91e6fc9b97de81b69742162cfd9fae5e33c617ef01efd

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