Malicious PDF — malware analysis report

Static analysis result for SHA-256 a606d97bae806a03…

MALICIOUS

PDF

70.3 KB Created: 2021-05-13 12:00:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: d529ad2203cd8e6656c44ecf6e37cd8a SHA-1: d1ffb6387ba46a3b0f1a0ef1e3141e2fa64b6831 SHA-256: a606d97bae806a03a43a876771e5732cd94bab9b0f646e3abbeb097febae0dcb
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with one prominent URL pointing to a suspicious domain ('soxebez.ru') that is likely part of a phishing or malware distribution scheme. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' further indicates a malicious intent to host many links on disposable domains. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to redirect users to malicious content.

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://soxebez.ru/strik?utm_term=what+does+orange+light+on+arris+modem+mean PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4472793/normal_5ff6113887ddd.pdfIn PDF document text
    • http://silkhfig.bid/what_is_the_difference_between_the_crosswave_and_the_crosswave_pet_pro52ilw.pdfIn PDF document text
    • https://jitugexe.weebly.com/uploads/1/3/0/9/130969989/5858331.pdfIn PDF document text
    • http://bokevefinobi.iblogger.org/fubiwamij.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415331/normal_5fe7d653b0f24.pdfIn PDF document text
    • http://ellmax-site.xyz/78062290324w43z8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454438/normal_60671d3f1887f.pdfIn PDF document text
    • https://fokurojisek.weebly.com/uploads/1/3/1/4/131438639/ruvikufemazobuxupe.pdfIn PDF document text
    • https://dudasajaje.weebly.com/uploads/1/3/4/3/134362454/4298503.pdfIn PDF document text
    • http://bumaga.bz/how_to_play_the_djembe_drumci9ps.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/vebenok/waxase.pdfIn PDF document text
    • https://s3.amazonaws.com/moduluzuxikari/how_to_get_xbox_live_gold_for_free.pdfIn PDF document text
    • https://s3.amazonaws.com/gafedupeba/zezumosekaluwepenage.pdfIn PDF document text
    • http://gofosuxubajo.epizy.com/41415640012.pdfIn PDF document text
    • http://takoxun.epizy.com/sezewino.pdfIn PDF document text
    • http://febiked.rf.gd/rebawuw.pdfIn PDF document text
    • http://poxelisenaxoxig.epizy.com/punosilunuroboma.pdfIn PDF document text
    • https://s3.amazonaws.com/kopisigapub/dafeju.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_off0000d5e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5E9 5252 bytes
SHA-256: e612ca8641e2af8fddaa1649f0191a46cf30220d3738cdf58be560280854b808
font_01_sfnt_off0000e7a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7A6 10504 bytes
SHA-256: 6949df3ab64852a64878e1d310112b84345a949c9efc452676b37a35cade4e1b

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