Malicious PDF — malware analysis report

Static analysis result for SHA-256 c40007097c2b9dca…

MALICIOUS

PDF

90.5 KB Created: 2021-03-24 22:00:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e888a1195cdfe3de0c600914522d3a4a SHA-1: 90714654da148baad47cb1cbc3880c856d40f3fb SHA-256: c40007097c2b9dca68338a62dc4165af49e73ec30b19764c78f36bda1f8afcff
156 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, many of which point to external websites, suggesting a link farm or phishing attempt. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links were generated. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://soxebez.ru/wix?keyword=tree+of+savior+cleric+guide+2020
    • http://argo-tourism.com/noxatiw9gi1.pdf
    • https://nogisapu.weebly.com/uploads/1/3/1/4/131453993/deseke.pdf
    • https://jokuvaput.weebly.com/uploads/1/3/4/5/134589987/tebem.pdf
    • http://begdas.fun/938088906764benm.pdf
    • https://gimituwemowi.weebly.com/uploads/1/3/4/8/134872285/7fee5bc6cc13fcb.pdf
    • http://konsalting.info/asus_x205ta_battery_replacement0lhh6.pdf
    • http://astrohelp.space/employee_experience_journey_mapping_templatef67lt.pdf
    • https://bekazavaf.weebly.com/uploads/1/3/5/3/135327011/zixilawozegi.pdf
    • https://vovowiki.weebly.com/uploads/1/3/2/3/132303124/bazewojifor-salazuse-zonoxigavi-wikinumexanak.pdf
    • http://evatopshop.xyz/does_bbg_workq5wu3.pdf
    • https://jinijazi.weebly.com/uploads/1/3/4/6/134668286/b10677.pdf
    • https://jasoveloxera.weebly.com/uploads/1/3/5/9/135967924/fujeva-jutoko-gunudedog-jokipede.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/tokit/2006_honda_odyssey_alternator_cost.pdf
    • https://s3.amazonaws.com/xefezesebusu/flight_landing_video_free.pdf
    • https://s3.amazonaws.com/besafefaf/tofinimoresefafelugijeve.pdf
    • https://s3.amazonaws.com/duzexefemosaxe/tuniwijirozafituve.pdf
    • https://s3.amazonaws.com/befarekogol/38189245802.pdf
    • https://s3.amazonaws.com/wazotojemov/jukatemutiminiwutumuteki.pdf
    • https://s3.amazonaws.com/libowebujakux/fewefalilovame.pdf
    • https://s3.amazonaws.com/fipijife/judimir.pdf
    • https://s3.amazonaws.com/lakadutof/34273388631.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010ecf.bin
70815e0c255866e000f7f60fa838b42fa233cd3e1ae36cee5060703c6d225126		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10ECF 4420 bytes
font_01_sfnt_off00011e55.bin
5d6326c332187f4989218b37a919f849d7ab40367027acbec3f202884fac3ad5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11E55 5472 bytes
font_02_sfnt_off00013104.bin
364d01d6018c570238dd90df2e24f7b14550a01460ae3cdf62f18582ffec6362		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13104 12960 bytes

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