Malicious PDF — malware analysis report

Static analysis result for SHA-256 97863ee1d6247851…

MALICIOUS

PDF

39.9 KB Created: 2020-09-07 23:41:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 02a08641e794503bc9bcd010cd59aae6 SHA-1: b82fce0db5994b3c56022411be58dc7ce9fddf38 SHA-256: 97863ee1d6247851166ba8f74c7deb3dfd21756fedea4f78b914f4e103ab5ac5
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged as malicious by an ML classifier and contains a critical heuristic indicating it's a redirector link to known malicious infrastructure. It also exhibits characteristics of a PDF link farm, with numerous embedded URLs pointing to external resources. The primary malicious URL identified is https://ttraff.club/wix?keyword=basic+exponents+worksheets+pdf+kuta, which is likely used to lure users into downloading further malicious content or engaging in phishing activities. The presence of PRC/3D content is noted but does not directly contribute to the primary attack pattern identified.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • PRC/3D content in PDF medium CVE related PDF_PRC_3D
    PDF contains PRC 3D content. PRC/U3D parsers have been a recurring Adobe Reader attack surface; treat as a related parser-exploit indicator rather than a specific CVE match.
  • 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=basic+exponents+worksheets+pdf+kuta In 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/1/0430/1206/3391/files/lupukifusijisexomibatokij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2393/2311/files/audio_frequency_oscillator_experiment.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fovurasavelibegesixaga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6186/0757/files/59416769402.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0467/7648/3993/files/aha_acc_atrial_fibrillation_guidelines_2014.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0659/1127/files/bavanu.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/2eedf1_ff8456f35c2c47e4b016abb3c95e1221.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/29c71c_3f7e7f9df9074cdd894cd9520a95ba39.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/5bb01c_229c757956074500bfe8fda7dbcb5281.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/2f7489_92ffe372f53f4c5faebcf6656c4c3164.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/268ab1_4515bd8fbb6c43d0ad1cae9d63ea589a.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/defcb2_98d19d31410048ee880d2dad439e47c7.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/760101_3f6102828c294804968dcf83e9fef8c5.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_07b7e67539e94b319f124c84ebc7e973.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_off00005e4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E4F 5484 bytes
SHA-256: b948c73daec0717ccd561ef70e0a89a6aa83eac0760b81271f5b5fe05890d249
font_01_sfnt_off0000710b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x710B 9864 bytes
SHA-256: ad3c32919766d30e68aea7804658801eca71dc75fd374e825357c5c8e36f911f

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