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)
MD5: d4619f0ca46fb3f54b3bb272aebfbe72 SHA-1: dd2a78321767512aefbc45b93f025e78f2d6cdbd SHA-256: 6bac2a92da4b592958d0c199fdbfea78b517cb4087f31aee5e5d583e4b5a2d10
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains the same URL. This indicates the primary function of the file is to redirect the user to potentially harmful content, aligning with phishing or malware delivery tactics.

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0440/6706/1910/files/riptide_ukulele_tabs.pdf
    • https://cdn.shopify.com/s/files/1/0429/2119/7724/files/ximelixune.pdf
    • https://cdn.shopify.com/s/files/1/0433/6877/5841/files/seconds_in_year.pdf
    • https://static.usrfiles.com/ugd/16879a_cef9448af0e14a59a392834bfe786dac.pdf
    • https://static.usrfiles.com/ugd/7ea8bb_b8ea86631f214acc99881cd823425a82.pdf
    • https://static.usrfiles.com/ugd/008e52_207c542e7e7a45ba9027f76d585be738.pdf
    • https://static.usrfiles.com/ugd/f34823_689d62c5776647a6beb82a337612924a.pdf
    • https://static.usrfiles.com/ugd/271e65_6e1609a0e3b84197b4ed9e5c178f41f4.pdf
    • https://static.usrfiles.com/ugd/c0fca2_e0ca84cba3954fbaabbfcb89722ad6fe.pdf
    • https://static.usrfiles.com/ugd/b8c837_26b44f289cf9405e9b6eb01e7ceb64d3.pdf
    • https://static.usrfiles.com/ugd/68ec51_9ade0734790c4bad84e4c94fc22f5808.pdf
    • https://cdn.shopify.com/s/files/1/0437/0402/5242/files/performance_tool_brake_drum_puller.pdf
    • https://cdn.shopify.com/s/files/1/0433/2797/9678/files/drenagem_linfatica_manual_ajuda_emagrecer.pdf
    • https://cdn.shopify.com/s/files/1/0437/8745/2576/files/naleduzo.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00069eac.bin
8438f6c0c1b2dd33486da456b50049973efce5d165b61a470d547346936e3fcf
pdf-font-stream PDF embedded font (sfnt) at offset 0x69EAC 5176 bytes
font_01_sfnt_off0006b072.bin
68a4dc1b64c8be220afd42eb037264169a5c0b7ed5139f150350dc35a9e04528
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B072 11260 bytes