Malicious PDF — malware analysis report

Static analysis result for SHA-256 3be7dbf580755421…

MALICIOUS

PDF

80.9 KB Created: 2021-03-19 20:59:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: a239d9b6ae5935c189de718916113865 SHA-1: c0b6bed9840ddd1676578d32565c766095baa905 SHA-256: 3be7dbf580755421b75146df389e8d6b87e5d25057dfc62d2780b3cc7b875541
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to potentially malicious domains, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier and ClamAV also flagged this file as malicious, specifically as a phishing trojan. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to malicious sites, likely for phishing or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://dugedepap.ru/award?keyword=acta+de+constituci%25C3%25B3n+del+proyecto+pmbok+pdf PDF link annotation
    • http://sdfsdfsdf.shaketorch.com/abolition_of_slavery_and_slave_trade.pdfIn PDF document text
    • http://zojapudugu.22web.org/15600138227.pdfIn PDF document text
    • https://jabibodusap.weebly.com/uploads/1/3/2/6/132681053/3280372.pdfIn PDF document text
    • http://fukikenikiru.22web.org/xumenipajikibalumen.pdfIn PDF document text
    • https://dibigisilob.weebly.com/uploads/1/3/1/6/131607467/medemuvudumi.pdfIn PDF document text
    • https://pujuwofox.weebly.com/uploads/1/3/4/8/134882524/3620968.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jevedijadiki/adam_levine_lost_stars_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51b268ab-bb69-4eb4-a419-80ac795e1802/bapusojojutulemojinukepu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c4591dc-5cb8-4a19-a3a1-b4a588638895/85534851022.pdfIn PDF document text
    • https://s3.amazonaws.com/wukevirenesu/grammar_and_punctuation_worksheets_grade_6.pdfIn PDF document text
    • https://s3.amazonaws.com/xelimewat/strikethrough_verb_forms.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f33d34da-2416-450d-a89f-da6809a91f22/bitixi.pdfIn PDF document text
    • https://s3.amazonaws.com/tedowafomaru/miss_universe_2014_question_and_answer_portion.pdfIn PDF document text
    • https://s3.amazonaws.com/lupuvogotog/sorijemev.pdfIn PDF document text
    • http://kozusabupo.epizy.com/john_maxwell_leadership_bible_niv.pdfIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/niboba.pdfIn PDF document text
    • http://danexoz.rf.gd/22095674964.pdfIn PDF document text
    • https://s3.amazonaws.com/kifutizijebuj/99218142567.pdfIn PDF document text
    • https://s3.amazonaws.com/tevomenil/danish_zehen_alvida_song_mp4.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5db116b6-b748-4938-b8f1-0ae440c5c82b/gugamovevetebefelikox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c8a1ae7-9d57-4d9e-a774-0638c3bee697/81186379011.pdfIn PDF document text
    • https://s3.amazonaws.com/fosalizuzu/what_are_the_5_smart_objectives.pdfIn PDF document text
    • https://s3.amazonaws.com/gedesisumi/34040199303.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_off0000fa67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA67 5732 bytes
SHA-256: ef860627f303a274fafec9143e7e47205c28d236ca248bf87af1600f12241c8f
font_01_sfnt_off00010d9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D9F 11632 bytes
SHA-256: b724d05f9a1319c7b990b90b3d526ea808c270769452420b9cd40b8887c303cb

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