Malicious PDF — malware analysis report

Static analysis result for SHA-256 132f5691315cab8b…

MALICIOUS

PDF

150.3 KB Created: 2020-09-11 12:39:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: 5c89ad988bfde045d8b27b337d4dcc0f SHA-1: 4c84677e096d1524e257ed12a1ed9827baa9368f SHA-256: 132f5691315cab8be954fdbf2b4b9d5f13f8d4c64409a0b30c285bf7de6bfcb8
94 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating an attempt to lead the user to a malicious site. The embedded content, though heavily obfuscated, includes the same malicious URL, reinforcing the phishing attempt. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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.me/wix?keyword=movies+songs+telugu+2019 In PDF document text
    • http://files.boerboeluk.com/uploads/1/3/1/8/131860787/kidimadezunebuloraro.pdfIn PDF document text
    • http://fotadu.hoofandshoe.com/uploads/1/3/1/8/131871825/livaz.pdfIn PDF document text
    • http://jelalaga.delcacao.ch/uploads/1/3/0/7/130739873/2864845.pdfIn PDF document text
    • http://files.sandypawsanimalrescue.com/uploads/1/3/1/4/131409009/fewowar.pdfIn PDF document text
    • http://rorumo.emilynetteventing.com/uploads/1/3/1/3/131381518/7c549d1627be.pdfIn PDF document text
    • http://sobibazuz.frcteam2881.com/uploads/1/3/1/4/131437436/vikexiru.pdfIn PDF document text
    • http://xenaji.fclcpreschool.org/uploads/1/3/0/9/130969862/jelivezeginu.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/b8c837_3333b93d602148d5a90ff195de6b3302.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/02beb7_65fbe1b4199647c2a4093694178be620.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/80c1db_634a220ed95649c2a173f7170e2da2e4.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_08e45de8b96645c083bf5be921063285.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/9904c2_a838f43199834b878d6177995b12c4c5.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/ac51ce_74c61f99e87f4546bcdcd3f22a5a0686.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/47b1e8_384eb57437284aba8a72f54fda5064a9.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00020dc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20DC1 5096 bytes
SHA-256: f501122d35c6e0a4a668862963904e0cdb456a247ff4dfe0646216a80b56610c
font_01_sfnt_off00021f4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21F4C 14212 bytes
SHA-256: 937c1f424b42e854c898240ebbc3e2ffe1640de423e311f155c3912bdf036b21