Malicious PDF — malware analysis report

Static analysis result for SHA-256 9827d6297d947494…

MALICIOUS

PDF

103.6 KB Created: 2021-03-27 10:44:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: e6a1cd566175603802a3f63e286d5e89 SHA-1: 20a60a4faef3417e625c3f7448c2943cefc04aad SHA-256: 9827d6297d94749412bbc1eaab4c05a380f11377509087e7b581630c9ebe5aa7
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with one specifically pointing to a suspicious domain ('xezojetit.ru') that is likely part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://xezojetit.ru/award?keyword=react+js+tutorial+pdf+with+examples PDF link annotation
    • http://zulurasovuguloz.66ghz.com/cvc_phonics_worksheets_for_kindergarten.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408461/normal_602b7de1859ec.pdfIn PDF document text
    • http://debegezuvume.iblogger.org/jumanumovujaxuv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500882/normal_5ffc2af297fa8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390329/normal_5fddca6034d46.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407813/normal_5fdf56e5e68b4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460266/normal_5ff22e9498f05.pdfIn PDF document text
    • http://hd-cam-mirror-up1.club/43638473148sciq4.pdfIn PDF document text
    • http://cooldomen.space/zejekafotofiz5q9h.pdfIn PDF document text
    • http://doweryklkq.space/tomenunumobewqbzgb.pdfIn PDF document text
    • http://it50life.pro/innova_3040_scanner3pbq6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zomudipanosu.epizy.com/99931838039.pdfIn PDF document text
    • http://renirorevebu.epizy.com/10861705313.pdfIn PDF document text
    • http://zalowakudedakov.rf.gd/bacillus_species_characteristics.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df59214f-043c-414e-b018-58b8130b5437/32011323671.pdfIn PDF document text
    • http://majerowi.epizy.com/dyson_v6_absolute_battery_replacement.pdfIn PDF document text
    • http://fipuzugajan.epizy.com/55914568374.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d0194a3-35c6-4beb-99a6-0b706f39d6d8/the_writing_life_annie_dillard_goodreads.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b63b22e4-84c4-4683-9a07-086247be6495/what_is_the_nutcracker_suite_about.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb6a9c7c-5540-42d2-88d1-f3b75be14e7b/6929743281.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013c64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C64 5636 bytes
SHA-256: 653f08e186cb75640986c8208f39f55468ce5d86f8d4ba472b60854739ced1c0
font_01_sfnt_off00014f8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14F8B 11716 bytes
SHA-256: 314a508970b1aef9a48865f76b7c068285d4f417391ae13e934cdf56fb834fc0
font_02_sfnt_off000177dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x177DD 16836 bytes
SHA-256: fa9ac045ddf9b356d9122f05b8a8b7017d0ead0f1f81430611fa2a6be4685e2e

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