Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a58fa36623bb27d…

MALICIOUS

PDF

42.2 KB Created: 2020-08-10 16:43:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fefa71ead3e412d93d9ede3f331b3637 SHA-1: 86a9984c4fca71f4bef84ccf0c6da51a68e0754f SHA-256: 0a58fa36623bb27ded6c6febd7526074632e92f38ef90a92650d9557dd38bebc
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a link farm designed to redirect users to malicious infrastructure, specifically identified as 'ttraff.com'. The document body, though obfuscated, contains text suggesting it is a 'captivate book summary pdf', likely a lure to encourage clicks. The presence of numerous external PDF links and a redirector URL strongly indicates a phishing or scam attempt.

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=captivate+book+summary+pdf In PDF document text
    • http://files.lifestylenutritionvt.com/uploads/1/3/2/7/132740584/2736436.pdfIn PDF document text
    • http://files.sylvainetlesfilles.com/uploads/1/3/1/1/131164383/kamiveniwa.pdfIn PDF document text
    • http://files.oldpostfarm.com/uploads/1/3/2/7/132712326/8ffd88.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/1/0430/4610/9341/files/pasokubejasatupopuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4244/8295/files/ramobube.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7047/8746/files/97790610472.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/23342697578.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6150/1336/files/zupagazemetut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8315/9957/files/how_to_make_custom_emojis_in_discord.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3330/4986/files/nibexudituretopa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0609/9605/files/regal_commerce_center_rpx.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/61051106257.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5658/7174/files/frga_p_annat_fordon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xoxolesusoziviro.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 5

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_off000066c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66C7 5428 bytes
SHA-256: 7d8bf18dbcad1d821bdd599fa1743d4be6abe3c275472819b1115b7c1517f889
font_01_sfnt_off00007931.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7931 10148 bytes
SHA-256: 42cac8d059719588c20b0d1a7bddda356ed1394a60685c1143217fb559ec560e

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