Malicious PDF — malware analysis report

Static analysis result for SHA-256 7576cdbbc313adca…

MALICIOUS

PDF

41.1 KB Created: 2020-08-05 05:14:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e470368462ff02cc5befcf2d46b1126d SHA-1: 8b2adb66c720262aa83f4ecb51d8964d7953390e SHA-256: 7576cdbbc313adca8a4d5b5fd9952309b5b968082ab0f216bf38d43e1cbe8397
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a link farm designed to appear as a 'bolt and nut size chart' to lure users. The primary link redirects through a malicious infrastructure at 'ttraff.cc', indicating a phishing or malware distribution attempt. The ML classifier strongly supports the malicious verdict.

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=bolt+and+nut+size+chart+in+mm+pdf In PDF document text
    • http://files.farahnayeri.com/uploads/1/3/0/8/130874317/2251402.pdfIn PDF document text
    • http://files.dsbcyouth.org/uploads/1/3/2/6/132695732/kuxafenukokapivikuji.pdfIn PDF document text
    • http://rikix.mardenridingclub.co.uk/uploads/1/3/1/3/131383791/dopapopolax_suxorupekekufim.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/1/0431/2665/3077/files/13926374521.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5529/2321/files/bufupupewubitinitob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4575/6821/files/nikivinesero.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2116/3941/files/diniwarojemafalodivelane.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5933/9679/files/76345000684.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6349/1222/files/roguretefokuxawibib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9983/1968/files/figaxelivapekilujel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nezaneseku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6404/9318/files/30734811358.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5863/3631/files/lowes_trussville_al.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1437/9930/files/90949981352.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4523/9456/files/1749876098.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 1

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_off00005c38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C38 5492 bytes
SHA-256: 583819c8e6cee3c8a0353c9c982f0a96f907181055e3ecbebdb9a436f8df7ca1
font_01_sfnt_off00006ec6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EC6 12576 bytes
SHA-256: 6b7d76348bef64d2f34baa9b103932343152f0e104be9c745acdf3ffc724528b

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