Malicious PDF — malware analysis report

Static analysis result for SHA-256 70abe7587e93520d…

MALICIOUS

PDF

72.0 KB Created: 2020-12-22 01:28:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: ba0be8eb49ede9416f2a002582b4ea61 SHA-1: 88ea178f2684d247f62fb85880d36140bcc97d0a SHA-256: 70abe7587e93520db4dae67fc310e73a41dcac1d513ad810f0338942bfc041bc
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a large number of external links, many of which point to potentially malicious domains, indicating a link farm or phishing attempt. The ClamAV detection and ML classifier strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a malicious document designed to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://trafficel.ru/strik?utm_term=war+world+2+movies PDF link annotation
    • https://nokiziwevapof.weebly.com/uploads/1/3/4/5/134507241/589382.pdfIn PDF document text
    • https://kokexofagisukop.weebly.com/uploads/1/3/2/7/132710589/4a9fe5b98282.pdfIn PDF document text
    • https://zuseluxutiv.weebly.com/uploads/1/3/4/6/134686448/jefadepeluketi_kogivaferam_zitiwupal.pdfIn PDF document text
    • https://vidisuxusa.weebly.com/uploads/1/3/1/6/131606291/tipejesanozisinu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/f55d8da2-b1a7-49bc-9551-d9477bf54df9/61890322397.pdfIn PDF document text
    • https://s3.amazonaws.com/jasipefulaxiduj/raxisugabewar.pdfIn PDF document text
    • https://s3.amazonaws.com/nonipesikiri/car_park_challenge_girl_games.pdfIn PDF document text
    • https://s3.amazonaws.com/tutapaxi/sivulebaxuf.pdfIn PDF document text
    • https://s3.amazonaws.com/tinajabizoreguf/20579402113.pdfIn PDF document text
    • https://s3.amazonaws.com/wexoteluwag/81757278112.pdfIn PDF document text
    • https://s3.amazonaws.com/dikobepibelun/49324024628.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8aceb181-70d1-4dc3-a59a-41055dc6aa15/dizenikebolokiroloni.pdfIn PDF document text
    • https://s3.amazonaws.com/jobavo/bal_ganesh_2_songs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8b2ef7f-c606-4b7f-a347-8bbbfe14e850/92816864871.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisi/tamil_meme_templates.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_off0000db55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB55 5268 bytes
SHA-256: 0da974c760b5798569527036fd69ec0c775b4ffe859c46545ab64fead8777894
font_01_sfnt_off0000ed40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED40 11412 bytes
SHA-256: eac2b4cf76e4be4fac189ece7b6de993a9908f03c0c0a149762dd8d9555f1ca2

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