Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0ac3c1821cc7348…

MALICIOUS

PDF

79.1 KB Created: 2021-02-25 06:11:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 996231a6fea8be350168efecf722a93b SHA-1: b19391ec429abc20263226f53e17cfdf3c1185bf SHA-256: f0ac3c1821cc7348e17eb378560b8a8949c5e56aeb9ad8bef1d1465181be5cc8
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and an ML classifier as malicious, specifically for containing a large number of external links, likely for SEO manipulation. The document body, though heavily obfuscated, suggests a lure related to a 'parent guide'. The presence of numerous external URLs, including one pointing to a potential malware download, indicates an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jacksth.ru/wix?keyword=rubberface+parents+guide PDF link annotation
    • https://vadutebo.weebly.com/uploads/1/3/4/8/134889136/6396706.pdfIn PDF document text
    • http://leomannapov.com/25088032130jhj30.pdfIn PDF document text
    • https://ruwizugaxuluba.weebly.com/uploads/1/3/4/7/134759804/sigoretatabazufow.pdfIn PDF document text
    • http://idealica-italiaofficial.site/hotels_near_chattanooga_tn_pet_friendlykqjyg.pdfIn PDF document text
    • https://vomodubezu.weebly.com/uploads/1/3/5/3/135398809/vibijinivu.pdfIn PDF document text
    • https://zapizurur.weebly.com/uploads/1/3/4/9/134900478/8961845.pdfIn PDF document text
    • https://cdn.sqhk.co/lopumilekana/iffrjcG/sky_force_reloaded_switch_2_player.pdfIn PDF document text
    • http://freshmind.net/rowokuvedam5b1n.pdfIn PDF document text
    • https://cdn.sqhk.co/rorifugera/Mhfggdm/romancing_saga_re_universe_tier_list_reroll.pdfIn PDF document text
    • https://cdn.sqhk.co/disidudi/h5lifKA/easy_vanilla_cake_recipe_gluten_free.pdfIn PDF document text
    • https://cdn.sqhk.co/nuzinirumawe/hhjaDn3/wadaxazekonip.pdfIn PDF document text
    • http://rozujed.sportsontheweb.net/juwofelefumulixum.pdfIn PDF document text
    • http://hookup153.site/allegiant_movie_free_hd2byyw.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/tiniruru/votabufufeletanawosufojet.pdfIn PDF document text
    • https://s3.amazonaws.com/wukevirenesu/tiwiwilakufas.pdfIn PDF document text
    • https://s3.amazonaws.com/kujesulad/pagizotagerumabimabo.pdfIn PDF document text
    • https://s3.amazonaws.com/ropuba/wadawepopaduko.pdfIn PDF document text
    • https://s3.amazonaws.com/mejigavukolu/83792694804.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_off0000f7f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7F1 5436 bytes
SHA-256: 9bb73a5999ef0d355410c8806b8b7087627512c67a9f5ac18a8b6e633574700d
font_01_sfnt_off00010a7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A7A 10692 bytes
SHA-256: 0652230c4e940d3d7d8879e118f6a6e60c676a7ac1f399e9d4610badf49b3df5

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