Malicious PDF — malware analysis report

Static analysis result for SHA-256 61a7ba5139017b32…

MALICIOUS

PDF

83.4 KB Created: 2021-03-16 09:14:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: c8bb31d55d12688a052bf979fc1d5475 SHA-1: 5b2f43ab55f735eb13916b7f39ffcbcb281bb88d SHA-256: 61a7ba5139017b32bc2c52d8940f03e88de015fff4bbe4b0faae0d1cb58250bf
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, mezovuduw.ru, which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to a wiki page, aligning with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://mezovuduw.ru/wix?keyword=parse%2527s+theory+of+human+becoming+wiki PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4388183/normal_5ff3c527bdb8d.pdfIn PDF document text
    • https://cdn.sqhk.co/nudotunaza/zLicigV/word_collect_puzzle.pdfIn PDF document text
    • http://suxoxaxowigab.scienceontheweb.net/berserk_manga_chapter_150.pdfIn PDF document text
    • http://tekupugu.sportsontheweb.net/38005686084.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451225/normal_600aea2c7b5c5.pdfIn PDF document text
    • https://cdn.sqhk.co/gowamojon/eZyhWjh/jilov.pdfIn PDF document text
    • https://cdn.sqhk.co/vivugiwu/sjegfih/flightradar24_apk_mod_8._1._1.pdfIn PDF document text
    • http://kawasus.scienceontheweb.net/28090107498.pdfIn PDF document text
    • https://cdn.sqhk.co/kunutewiwit/zticDgh/followers_and_unfollowers_app.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://e1eccfe9-8888-4f52-a155-e9c8e84e0752.filesusr.com/ugd/4fb05f_a868582e3e234e31ba796c322029298f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kegubinefuda/usul_al-fiqh_meaning.pdfIn PDF document text
    • http://xizizedenete.rf.gd/how_much_does_it_cost_to_sue_someone_for_breach_of_contract.pdfIn PDF document text
    • https://s3.amazonaws.com/sesijesule/34583802279.pdfIn PDF document text
    • http://vugovule.epizy.com/whirlpool_wdt720padm0_error_codes.pdfIn PDF document text
    • http://witigunakejawi.rf.gd/creative_writing_prompts_for_fourth_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/fekazudabo/75981175179.pdfIn PDF document text
    • https://8eefcaf3-52f5-4123-8be5-b1f0aaeea45e.filesusr.com/ugd/1d3654_dd2b94188a024304993805d141bec9e6.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zowibatev/dujugimajadabupumanubu.pdfIn PDF document text
    • https://d17f4099-ecc1-42b1-9c73-51521793457c.filesusr.com/ugd/4a2613_639c5d3653834f4c8c5f61f94248dd2d.pdf?index=trueIn PDF document text
    • https://55d63786-14d6-44de-84d0-33f1fb383c44.filesusr.com/ugd/45fd81_43e18150ea2e43d9b92472b701008aa7.pdf?index=trueIn PDF document text
    • https://316b94d8-f1eb-4552-9621-e6dada6029ed.filesusr.com/ugd/4b675a_9d7843d935e9497b9a45b1cde73c8a54.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lixuzo/how_to_write_a_letter_asking_permission_for_time_off_from_work.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_off0000f24e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF24E 5696 bytes
SHA-256: dca93fce27b26cee187fcffe3d5aba9d1eef61d90f572cea17f36361004343cf
font_01_sfnt_off000105ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105AB 10756 bytes
SHA-256: e5c074797cccd69b440366755620444d49378f2929f0f3c7f14e0ce3cdd4bee6
font_02_sfnt_off00012a84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A84 16204 bytes
SHA-256: a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd

Open this report in the interactive analyzer, or submit your own file for analysis.