Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d3ad45b0c30083f…

MALICIOUS

PDF

76.2 KB Created: 2021-02-21 18:22:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1ce7307323dcb1dca02b92efb3cdecd5 SHA-1: e68a396bb3db895cfc40d4d344d9685a9936d94b SHA-256: 3d3ad45b0c30083f807557ef515b00475bfe4edeea43538f514e42c944f93153
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a common tactic for SEO poisoning and phishing. The primary URL, 'https://druttle.ru/wix?keyword=lose+weight+pills+free+trial', suggests a lure for users seeking weight loss products. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/wix?keyword=lose+weight+pills+free+trial
    • https://guwawafike.weebly.com/uploads/1/3/5/3/135338161/zenisez.pdf
    • http://familyit.pro/hindi_film_2015_dilwaletfsin.pdf
    • http://eslivdrug.space/cen-tech_code_reader_60693stg6w.pdf
    • https://cdn.sqhk.co/kosibowo/jdFgfEg/hero_wars_puzzle_game_online.pdf
    • http://im-marceting.site/49814167081ue5kx.pdf
    • http://axecheat6.xyz/suer_toss_the_turtlexq14w.pdf
    • https://cdn.sqhk.co/pememobuwir/Hhehjgj/easy_drawings_step_by_step_disney.pdf
    • http://letgtma.bid/dietary_guidelines_for_lipids420qu.pdf
    • https://wimelavejitovuv.weebly.com/uploads/1/3/4/5/134597731/gonure_zunexoju_kotafuvonuj_pewininofukuk.pdf
    • https://fugunukotuji.weebly.com/uploads/1/3/4/5/134589730/10d3c7c88e.pdf
    • http://cozyplacefor.rest/32057416496m2m1j.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/sugowubuf/famamedixo.pdf
    • https://s3.amazonaws.com/sifawekujiki/56901342016.pdf
    • https://s3.amazonaws.com/wixatax/antidiabetic_plants_and_their_active_constituents.pdf
    • https://s3.amazonaws.com/tixedujegibex/descent_into_avernus_scribd.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_off0000db6f.bin
a0eed229a0dac457587eebf197fbcdbf4b5c4f0640339377aa8344f873b62afe
pdf-font-stream PDF embedded font (sfnt) at offset 0xDB6F 4512 bytes
font_01_sfnt_off0000eb2f.bin
d714bb579daf4e609197ad2999391da14c20e2569cc435087f974b6dcc4f2ad5
pdf-font-stream PDF embedded font (sfnt) at offset 0xEB2F 5196 bytes
font_02_sfnt_off0000fcf3.bin
9cc5d42b817db48102034d8c711d9ca8596f6edcd6db9fd78e6b0d29129d6180
pdf-font-stream PDF embedded font (sfnt) at offset 0xFCF3 10792 bytes