Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bac2a92da4b5929…

MALICIOUS

PDF

441.6 KB Created: 2020-09-14 20:05:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d4619f0ca46fb3f54b3bb272aebfbe72 SHA-1: dd2a78321767512aefbc45b93f025e78f2d6cdbd SHA-256: 6bac2a92da4b592958d0c199fdbfea78b517cb4087f31aee5e5d583e4b5a2d10
174 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, identified by the heuristic PDF_MALICIOUS_REDIRECTOR_LINK. This redirector is part of a lure for free downloads, as indicated by PDF_SEO_UTM_REDIRECTOR_LINK and SE_PAYMENT_REDIRECT_LURE, suggesting a phishing or scam attempt. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

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.
  • 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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=broken+prince+erin+watt+read+online+free 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/1/0440/6706/1910/files/riptide_ukulele_tabs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2119/7724/files/ximelixune.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6877/5841/files/seconds_in_year.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/16879a_cef9448af0e14a59a392834bfe786dac.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/7ea8bb_b8ea86631f214acc99881cd823425a82.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/008e52_207c542e7e7a45ba9027f76d585be738.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/f34823_689d62c5776647a6beb82a337612924a.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/271e65_6e1609a0e3b84197b4ed9e5c178f41f4.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/c0fca2_e0ca84cba3954fbaabbfcb89722ad6fe.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_26b44f289cf9405e9b6eb01e7ceb64d3.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/68ec51_9ade0734790c4bad84e4c94fc22f5808.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0402/5242/files/performance_tool_brake_drum_puller.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2797/9678/files/drenagem_linfatica_manual_ajuda_emagrecer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8745/2576/files/naleduzo.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_off00069eac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69EAC 5176 bytes
SHA-256: 8438f6c0c1b2dd33486da456b50049973efce5d165b61a470d547346936e3fcf
font_01_sfnt_off0006b072.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B072 11260 bytes
SHA-256: 68a4dc1b64c8be220afd42eb037264169a5c0b7ed5139f150350dc35a9e04528

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