Malicious PDF — malware analysis report

Static analysis result for SHA-256 386f5ce882445144…

MALICIOUS

PDF

72.6 KB Created: 2021-02-20 15:50:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: b8f5fefb5e41ee0e3e5eb0351fc1d777 SHA-1: 7563252ba65d4a0196baef828c35c8776e21ef8a SHA-256: 386f5ce88244514472d63d2f131933a11ffb37bec0ea6e899483a36397b9c7da
186 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or SEO spam operation. The document body, though heavily obfuscated, contains references to 'Drawing of the three movie' and 'wkhtmltopdf', hinting at a lure to external content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://baarspo.ru/wb?keyword=drawing%20of%20the%20three%20movie PDF link annotation
    • https://xufetujada.weebly.com/uploads/1/3/4/7/134745175/losupogewegaw.pdfIn PDF document text
    • https://cdn.sqhk.co/sevafeluba/YEoiehm/wusefeginolokin.pdfIn PDF document text
    • https://gujijuxe.weebly.com/uploads/1/3/5/3/135326775/rekifadubomup.pdfIn PDF document text
    • https://cdn.sqhk.co/someteku/jfc7Fxh/free_cars_glitch_gta_5_online.pdfIn PDF document text
    • https://noxiwufozale.weebly.com/uploads/1/3/0/8/130814513/fefipuged.pdfIn PDF document text
    • https://subegawi.weebly.com/uploads/1/3/5/3/135394411/putodezek-fovivanamewom-lojel.pdfIn PDF document text
    • https://fejiwapofiji.weebly.com/uploads/1/3/4/6/134699364/savivoromosuzuzokibi.pdfIn PDF document text
    • https://cdn.sqhk.co/zaliroded/jdNWVhI/bexikezubowineferatopu.pdfIn PDF document text
    • https://filudatobo.weebly.com/uploads/1/3/2/6/132681654/vunonexu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453914/normal_60144ecfbcdf1.pdfIn PDF document text
    • https://cdn.sqhk.co/mudonisogub/giqhitg/birdy_the_mighty_decode_episode_13.pdfIn PDF document text
    • https://dezijetide.weebly.com/uploads/1/3/4/8/134864221/sobofavobaxotedi.pdfIn PDF document text
    • https://vifojozajo.weebly.com/uploads/1/3/1/4/131454549/wufizena.pdfIn PDF document text
    • https://cdn.sqhk.co/bubuzibiv/Gja38qz/flight_tracker_app_for_private_planes.pdfIn PDF document text
    • http://lunamawel.22web.org/number_1_businessman_south_movie.pdfIn PDF document text
    • http://rukofuvifoti.22web.org/kedukewosisujugeko.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vukenorap.epizy.com/can_metformin_cause_bubbles_in_urine.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_off0000e1df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1DF 5124 bytes
SHA-256: 47a158c0506f528f31affaf0aa8eb70ab4b8ccf73e74c13c4aac16682a98a6d8
font_01_sfnt_off0000f346.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF346 10020 bytes
SHA-256: 07b25516c411b67fb487d22e72b6734cac491c0798498da098f4f36d4ab98d1b

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