Malicious PDF — malware analysis report

Static analysis result for SHA-256 8611323d4eafc90f…

MALICIOUS

PDF

68.7 KB Created: 2021-01-20 17:48:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 7c6b2d384d3762da791ad46ee1e08758 SHA-1: 7923292897330d14300c849d75431ca1654e5810 SHA-256: 8611323d4eafc90f34a5cc5401febf6bc77ea2d264696e43153a5611bf54ca43
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://seumenha.ru/123?utm_term=realistic+pro+38+scanner+manual PDF link annotation
    • https://mufajagirudul.weebly.com/uploads/1/3/1/4/131452858/99d6df990f9b3c.pdfIn PDF document text
    • https://kopiwuzurori.weebly.com/uploads/1/3/1/3/131398237/fovowofemotororemaba.pdfIn PDF document text
    • https://vudexugir.weebly.com/uploads/1/3/2/7/132710723/4488600.pdfIn PDF document text
    • https://site-1171458.mozfiles.com/files/1171458/programming_language_popularity_2019_stack_overflow.pdfIn PDF document text
    • https://site-1179301.mozfiles.com/files/1179301/cnc_lathe_speed_and_feed_calculator.pdfIn PDF document text
    • https://nuwofukejixi.weebly.com/uploads/1/3/1/4/131437867/77fef54fc83d0a8.pdfIn PDF document text
    • https://site-1245124.mozfiles.com/files/1245124/aptis_practice_test_with_answers.pdfIn PDF document text
    • https://site-1172508.mozfiles.com/files/1172508/atomas_game_pc.pdfIn PDF document text
    • https://site-1172743.mozfiles.com/files/1172743/zokefusanowarobisenaja.pdfIn PDF document text
    • https://site-1246576.mozfiles.com/files/1246576/wipumisusalejepesefu.pdfIn PDF document text
    • https://site-1174552.mozfiles.com/files/1174552/48210315365.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/tosevud/77504536828.pdfIn PDF document text
    • http://zuvetimimu.rf.gd/mergers_and_inquisitions_resume_template_private_equity.pdfIn PDF document text
    • https://s3.amazonaws.com/wetowuzuxit/labakukekizorin.pdfIn PDF document text
    • http://wafubarig.epizy.com/70482753117.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_off0000ceac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEAC 5444 bytes
SHA-256: 33ef5f37c7a9d21736211804421a93454de27485780c7b324aab62117a52b719
font_01_sfnt_off0000e11b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE11B 10932 bytes
SHA-256: 81e4bede020dcbfdf691a687f300c57deda595fe40ca346a06fb5f34bcc1205f