Malicious PDF — malware analysis report

Static analysis result for SHA-256 720b9f9a03429a3c…

MALICIOUS

PDF

53.9 KB Created: 2020-08-24 01:58:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 394066269de4edb084c5317f40ffc2bd SHA-1: de5cd72664b0d6ee97c83d296689c05fa31b3d0c SHA-256: 720b9f9a03429a3cd126cf4672a4127608055fa1ee831a9669086f68ccca2bd3
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file contains embedded links that redirect to known malicious infrastructure, specifically a redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains text related to 'Surmai fish nutritional information' and the URL 'https://ttraff.com/pify?keyword=surmai+fish+nutritional+information', suggesting a phishing or scam lure. The presence of numerous external PDF links also indicates a link farm strategy, likely for SEO manipulation or to host further malicious content.

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=surmai+fish+nutritional+information In PDF document text
    • http://files.annehuthartist.com/uploads/1/3/2/7/132710634/nolerilegemu.pdfIn PDF document text
    • http://files.newqueervisions.com/uploads/1/3/1/0/131070588/9366940.pdfIn PDF document text
    • http://tubud.jaseelectrical.com/uploads/1/3/1/4/131407424/172f2101bcaf93.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/1/0435/1806/6842/files/jewof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9094/3904/files/caries_rampante_en_nios.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4389/5966/files/kovilexenaxapowu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6962/8828/files/94680545760.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9163/9974/files/69098388242.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1615/1455/files/36016304161.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8000/8355/files/add_fractions_with_unlike_denominators_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/3470/9914/files/reactions_of_aldehydes_and_ketones.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4131/6264/files/bulletin_de_salaire_exemple.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4790/1592/files/eight_days_a_week_chords.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 3

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_off00009327.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9327 5108 bytes
SHA-256: 4080081866f350d534aa05a66158ab7dbf52396d54d1de333609daba8c83d45c
font_01_sfnt_off0000a45a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA45A 11896 bytes
SHA-256: 78515a91c1298f5837ec7c0570b3ccb4d167d22c1437f2d440ba5bbcbb372a0d

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