Malicious PDF — malware analysis report

Static analysis result for SHA-256 629356d73985495d…

MALICIOUS

PDF

78.9 KB Created: 2021-02-26 02:41:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: d872e939d9635b8db94421bdc44e253c SHA-1: 9df392f51a0644cb4150c4feee6cb5f2d60cf485 SHA-256: 629356d73985495da4ca218f84609586bc00f6210481a721c46bc04fb5e9ab0c
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, and the ML classifier strongly indicates maliciousness. The document body, though heavily obfuscated, appears to be a lure related to a 'Predator 2000 watt generator manual'. The presence of embedded URLs and the critical heuristic firing for a malicious redirector suggest this document is designed to lead the user to a malicious site, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://crophysi.ru/strik?utm_term=predator+2000+watt+generator+manual In PDF document text
    • https://cdn.sqhk.co/womilepeba/jhggphd/radio_skyrock_ecouter_en_direct.pdfIn PDF document text
    • http://nutejujaxi.66ghz.com/84157009514.pdfIn PDF document text
    • http://zhigina.ru/24010739522i7uet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427811/normal_600d8760947fa.pdfIn PDF document text
    • http://trendmobile.ru/52186172908d8jsk.pdfIn PDF document text
    • http://homearfes.com/platform_bed_frame_wood_queens7d0l.pdfIn PDF document text
    • http://levelupguild.com/vivo_video_editor_apkk2lvf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373243/normal_6006af8d06558.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381551/normal_60072b7923cc9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nupopagiwagivu.epizy.com/thank_you_letter_for_business_partnership_template.pdfIn PDF document text
    • http://xujiwusa.epizy.com/tewodewojefewujave.pdfIn PDF document text
    • https://s3.amazonaws.com/zizene/beginning_consonant_blends_worksheets_for_kindergarten.pdfIn PDF document text
    • http://kenuzuwemonuda.epizy.com/58839326290.pdfIn PDF document text
    • https://s3.amazonaws.com/miledu/go_math_grade_6_homework_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/babuxufarizuxur/54172910580.pdfIn PDF document text
    • https://s3.amazonaws.com/jukoxisojow/magnetism_worksheet_for_5th_grade.pdfIn PDF document text
    • http://rukudukewa.epizy.com/bridge_hand_generator_free.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA53 5332 bytes
SHA-256: ce06b95b335f19409973b345275e81611b3d23f6cfe3f5e93d86c0768e0c8c6c
font_01_sfnt_off0000fc61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC61 1936 bytes
SHA-256: 21a7146106e2ad29a4dcc6aa55cee169416400570e2b3d493b6d071cb256f2f3
font_02_sfnt_off000105a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105A3 11340 bytes
SHA-256: e7971922e43c991a5402705a6a9b46983a757e4e722943759ea5acd46c462211

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