Malicious PDF — malware analysis report

Static analysis result for SHA-256 37083b20bd101d05…

MALICIOUS

PDF

43.5 KB Created: 2020-08-25 17:04:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3ca62199998e65358cd964b7e1d5d67b SHA-1: c365e6a7d681ad70c496d06b08a4471f5fed9a33 SHA-256: 37083b20bd101d05e37fae5973ceb16a9e7f55877316d0793963c31cf0d7ec37
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a technique often used to direct users to malicious websites. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely intended to obscure the final malicious destination. The document body, though partially corrupted, suggests a lure related to 'Logo quiz minimalist level 3 answers', aiming to trick users into clicking the embedded links.

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=logo+quiz+minimalist+level+3+answers In PDF document text
    • http://pisapeni.theformingspirit.org/uploads/1/3/1/4/131437792/zeribotederop.pdfIn PDF document text
    • http://files.transformationconference.co.uk/uploads/1/3/1/3/131398117/dovitu_wanojem_todenopikined.pdfIn PDF document text
    • http://botopati.paulkruegermusic.com/uploads/1/3/0/7/130776436/zamafubexusuju.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/1/0435/4369/1413/files/35716466482.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53262414385.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8738/9087/files/ivy_global_sat_practice_test_3_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1253/5958/files/commutative_property_of_multiplication_worksheets_3rd_grade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8693/0329/files/22871230255.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7020/1760/files/rpg_vx_rtp.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1690/3080/files/kipiguviwojunuwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3019/2039/files/41811215085.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0201/9487/files/free_template_web_html_css.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1338/1028/files/xafepafixufig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3380/5471/files/experian_credit_score_report_password.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_off00005ff7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FF7 5436 bytes
SHA-256: 1e49e05f98a20fbb9e347593d8bc089abd312256e9769f4a795b2e408a74883f
font_01_sfnt_off00007281.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7281 15152 bytes
SHA-256: f68634942c3c8bef0afdc40b32ffcd669df564a7087ccf11fad16aac1e9f2c70

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