Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a3b2f1333999c5d…

MALICIOUS

PDF

69.3 KB Created: 2020-11-11 09:05:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 13095b613d8de2b5b7c10df664911d5e SHA-1: 1372222d8674ed75c5693a1d7e85960983510288 SHA-256: 2a3b2f1333999c5d1439ab9920e3768e27c877cb23a329ec6ffca9c16c4c5f61
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or distribution mechanism. One of the embedded URLs, 'https://trafftec.ru/123?keyword=pawn+of+prophecy+movie', is flagged as unknown reputation, while another, 'https://uploads.strikinglycdn.com/files/f4280771-f247-4aec-a06a-1364e8c29100/bobitezikadobizitekiralod.pdf', is part of the link farm. The ML classifier and ClamAV detection strongly indicate maliciousness, likely related to phishing or malware distribution.

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://trafftec.ru/123?keyword=pawn+of+prophecy+movie PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4423133/normal_5fa5fd4cc4099.pdfIn PDF document text
    • https://waxalema.weebly.com/uploads/1/3/4/3/134364729/suzine.pdfIn PDF document text
    • https://zidajikivumab.weebly.com/uploads/1/3/4/6/134625594/e3d83458d8fbac.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/f4280771-f247-4aec-a06a-1364e8c29100/bobitezikadobizitekiralod.pdfIn PDF document text
    • https://s3.amazonaws.com/foneniz/design_thinking_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b778af2c-5552-43d3-a12a-05ab911e4197/sweetest_day_2020_date.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c38dfad4-dbd9-46bd-8eb1-98379c49d997/80197244791.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e75e0e7-eede-431c-8195-0aec0def177c/89308462558.pdfIn PDF document text
    • https://s3.amazonaws.com/xifabilejilab/datipilukevofonabexe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2af58a62-e6a6-4309-9ff2-037207ff56a5/dumujava.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41bcdbb1-b5a6-4b83-a5b2-00ea9d1f65ba/45267135484.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59fffd3f-d144-4624-a64b-e0f4af0d98d6/watch_black_butler_dubbed_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20243ccb-a267-4a5b-9387-cece00926e67/40050506093.pdfIn PDF document text
    • https://s3.amazonaws.com/paropabaru/my_download_speed_is_bad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/24e85da7-67b4-4613-8380-dcad6807b812/81404993978.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_off0000d3bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3BC 5300 bytes
SHA-256: cd60e366ade24e9ec1e9dc5ef80057acd412ed9582cb4dc71035d6978155228d
font_01_sfnt_off0000e5bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5BD 10196 bytes
SHA-256: 7cf7bbc2d2185a6a0db8b8485dced8b399bbcc05e76d29cb6c8fc1d0cfc92234

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