Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a06bf8ee21fca42…

MALICIOUS

PDF

67.0 KB Created: 2021-03-16 12:52:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 0b615e1dad468d5ec91f387b770d42d0 SHA-1: 5fabc219b5fb40618058269ebfa4b4e1b4a74e6c SHA-256: 6a06bf8ee21fca42ae5278d03406fde1f3c2d8ae7f6e01e06a48c25608ded081
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to disposable hosting and are part of a link farm, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The document body, though heavily obfuscated, appears to be a lure related to technical documents, likely to trick users into clicking the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://vilenefex.ru/award?keyword=catia+v5+tutorials+mechanism+design+animation+release+19+pdf PDF link annotation
    • https://wodarobasuk.weebly.com/uploads/1/3/5/3/135300597/365bf0.pdfIn PDF document text
    • http://iblack.space/rakuxufafenilukazavobotdmoep.pdfIn PDF document text
    • http://raftgjgr.space/diners_club_rewards_australiahj9l9.pdfIn PDF document text
    • http://vvvvvvvvvvvvvvvvvvvvvb.xyz/how_to_stretch_tight_elastic7g8hb.pdfIn PDF document text
    • https://voropulunonuz.weebly.com/uploads/1/3/5/3/135316946/005e155ee1b0.pdfIn PDF document text
    • http://big-ita.space/87930346932ilbsa.pdfIn PDF document text
    • http://starconflict-game.ru/king_james_bible_onlinetdyld.pdfIn PDF document text
    • http://hugertely.xyz/64375085184acord.pdfIn PDF document text
    • http://vedivux.mygamesonline.org/jikimuraxekiravolabokub.pdfIn PDF document text
    • https://selisibukexapa.weebly.com/uploads/1/3/4/3/134317440/gezebuvoj.pdfIn PDF document text
    • https://zifokodogip.weebly.com/uploads/1/3/1/3/131398222/dutogikefaw.pdfIn PDF document text
    • https://kifajiziwezu.weebly.com/uploads/1/3/2/7/132740821/65058653ddc.pdfIn PDF document text
    • https://nuxajitavira.weebly.com/uploads/1/3/1/8/131871558/c6dea99187923.pdfIn PDF document text
    • http://kinoxca.xyz/stepping_up_beth_mooret2iw2.pdfIn PDF document text
    • https://fulesinarube.weebly.com/uploads/1/3/4/7/134729099/7006429.pdfIn PDF document text
    • http://wejowadizabudex.mypressonline.com/53552672237.pdfIn PDF document text
    • https://demaxezobenila.weebly.com/uploads/1/3/1/8/131856353/191476.pdfIn PDF document text
    • http://itdiscount.info/statement_of_faith_for_job_example1jima.pdfIn PDF document text
    • http://pay-order.info/lerukakisovwwn4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gozidonozali.myartsonline.com/craftsman_garage_door_decorative_hardware.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab4ab8f3-1d91-41be-938d-af00d04478af/what_did_erwin_do_to_esther_in_the_bell_jar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db106046-c841-460c-a190-fe471ebe0cfd/27547917125.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_off0000c911.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC911 5868 bytes
SHA-256: db5b4785520804d4fddf69f98baf7ec0157992e34de732ba280e4af72dc78e82
font_01_sfnt_off0000dcea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCEA 9596 bytes
SHA-256: 2c8dcd0318f2a8d2e11c5e8ff4f82c8dd880e9f4bbd93156c23f502110cc933a

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