Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f14e76cac66de25…

MALICIOUS

PDF

41.2 KB Created: 2020-09-10 11:00:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 012f4ec2ce03101079049d8590df441d SHA-1: cee49881f043a745d9ba97e228ff74ed6dcaaf87 SHA-256: 3f14e76cac66de255f1e39544e7c90529843c3226f30dab4efbbe22d080bc42c
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.club/wix?keyword=multiplication+of+polynomials+worksheet+for+grade+7`. This URL is likely part of a phishing or scam campaign, attempting to lure users with seemingly educational content. The document body, though heavily obfuscated, also contains this URL, reinforcing the malicious intent. The presence of numerous other links, many pointing to `static.usrfiles.com`, suggests a link farm or a method to obscure the primary malicious destination.

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.club/wix?keyword=multiplication+of+polynomials+worksheet+for+grade+7 In PDF document text
    • http://tobawoma.labordebeefalofarms.com/uploads/1/3/0/7/130775436/5798383.pdfIn PDF document text
    • http://files.codetrainingandconsulting.com/uploads/1/3/0/7/130775519/4e0c08fda.pdfIn PDF document text
    • http://files.bigtimbercattle.com/uploads/1/3/1/4/131437246/1606641.pdfIn PDF document text
    • http://rasiwi.order526.com/uploads/1/3/2/6/132683014/7caa1d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/8bf3fc_bda03da71123420e8aa06795a2714957.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/df4650_407fb87fc9204fe29aad5a2c78b20608.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/1decf9_ec065a1b94694734822b821784e5fb74.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/6908d7_930267aee9bc49b4a91f410a3ede28b6.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0926/9156/files/love_island_pie_game_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3644/1752/files/risk_assessment_report_template_word.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0466/2840/5413/files/riwimijemugopedasu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7439/6063/files/formule_aire_d_un_cone.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/a32c20_a7dac17245cf4d2e80196cb110902455.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/e02969_2cfe4ab7b73245a1924a3394c0a4cc1e.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/135178_11fb894a906d4f48ab22acdf7620b79b.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b7ab08_4717a68d9fe44309ac6359224f6a36f8.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_off000061bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61BB 5912 bytes
SHA-256: 3b7c4ad6a7b5167d34869bf164b7e75e84635cd165f02272c22b9b501c2eacab
font_01_sfnt_off000075e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75E1 9828 bytes
SHA-256: eb6676234b620eb51c0e6a8eb7a1c27c15913ca362d7714e1427b5d3d2a4fa04

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