Malicious PDF — malware analysis report

Static analysis result for SHA-256 e075d730a162ea25…

MALICIOUS

PDF

75.6 KB Created: 2020-12-28 06:15:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: c22682fcc64dfcc2693964dc2248f0f1 SHA-1: f94670e3e810597598eb9793f75fcb2af4fff833 SHA-256: e075d730a162ea256af71cbc2cc70de4550f25ec40afc56b438f711db65fd200
222 Risk Score

Malware Insights

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

This PDF document contains a link to a known malicious redirector, which is part of a link farm designed to distribute malicious content. The document's content, though heavily obfuscated, appears to be a lure related to uncollectible accounts, aiming to trick the user into clicking the malicious link. The presence of multiple PDF links and the ML classifier's high confidence score indicate a malicious intent to redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://traffine.ru/123?utm_term=when+does+an+account+becomes+uncollectible In PDF document text
    • https://cdn-cms.f-static.net/uploads/4385880/normal_5fe7bdd403829.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483072/normal_5fa97fcbd5c88.pdfIn PDF document text
    • https://jaxebenub.weebly.com/uploads/1/3/4/2/134266064/311799.pdfIn PDF document text
    • https://wovenatoz.weebly.com/uploads/1/3/1/4/131454427/sevudiradi-ralowukatupunu-lazepilejutu.pdfIn PDF document text
    • https://cdn.sqhk.co/sigagegijej/61hc2ge/13753110029.pdfIn PDF document text
    • https://cdn.sqhk.co/vugujebeku/jjjfjg2/piwokovuvivej.pdfIn PDF document text
    • https://cdn.sqhk.co/pimidima/fhdidkN/317750101.pdfIn PDF document text
    • https://cdn.sqhk.co/wezopexa/a6nijjb/street_of_rage_2_japan_rom.pdfIn PDF document text
    • https://kajugolake.weebly.com/uploads/1/3/0/9/130969904/473917.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376858/normal_5f960e5ee670b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495042/normal_5fc2051bd5eb0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371536/normal_5fa74e9981bbf.pdfIn PDF document text
    • https://sodefabufu.weebly.com/uploads/1/3/4/4/134473286/sodukevekamonuwuta.pdfIn PDF document text
    • https://cdn.sqhk.co/zokasejiz/Iha7egh/47114099216.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403128/normal_5fe3f58042e5a.pdfIn PDF document text
    • https://cdn.sqhk.co/buwepexe/ihc9nih/97279579870.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e8e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8E1 5236 bytes
SHA-256: 67a56a315065a005acd7fe6ea774e4b74daa5ec8d8601de37821074b4c680ba1
font_01_sfnt_off0000fa98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA98 11340 bytes
SHA-256: b5be7482fa28e53f51d828bf12a73d8b01ffb835d2f93cae8005d0f8bbcd0424

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