Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a529196cf44b2e1…

MALICIOUS

PDF

75.9 KB Created: 2021-02-20 20:58:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 169726c4b0376a57aba8e213fdf76252 SHA-1: 3d510fb068ffd73d80aa1eb158cb83507075ece6 SHA-256: 4a529196cf44b2e16a295d9458a9c7657f40d8b68886bbcde905d5ed8d36fa3a
126 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan distribution attempt. It contains numerous embedded URLs, including one that appears to be a search query redirect, suggesting a lure to external malicious content. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic further supports this, indicating the PDF is part of a link farm hosted on disposable domains.

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://jottigo.ru/wb?keyword=what%20are%20the%20rules%20for%20a%20permit PDF link annotation
    • http://dutov.org/cubic_boxing_3d_apk_download_uptodownje1v3.pdfIn PDF document text
    • http://biomanua.website/jexivimumokisosefutynry7.pdfIn PDF document text
    • http://true-board1.club/lojapiwekunulozupg7kf.pdfIn PDF document text
    • http://sojekobab.22web.org/18705114718.pdfIn PDF document text
    • http://svarka-aurora.online/6179770256296cfz.pdfIn PDF document text
    • http://lunotikipadul.66ghz.com/33268771764.pdfIn PDF document text
    • http://fakts.design/85332689688hu3mp.pdfIn PDF document text
    • http://okclub.org/18043362374p17w1.pdfIn PDF document text
    • http://helpcreditscore.info/starfinder_character_sheet_downloadu3g40.pdfIn PDF document text
    • http://vekogevev.22web.org/seses.pdfIn PDF document text
    • http://wexixexebasober.22web.org/7295240680.pdfIn PDF document text
    • http://collegegraduatecentraldating.com/balance_sheet_general_ledger_accountefxry.pdfIn PDF document text
    • http://trokot-online.xyz/113411295570lc1c.pdfIn PDF document text
    • http://logefekur.22web.org/brawl_stars_mod_apk_version_16._176.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rimugerumu.rf.gd/298076939.pdfIn PDF document text
    • http://noderisaxe.rf.gd/bijli_giri_remix_song_free.pdfIn PDF document text
    • http://vubimefiz.epizy.com/19039018974.pdfIn PDF document text
    • http://zugotival.epizy.com/kupodasisukok.pdfIn PDF document text
    • http://lubozogemodusa.epizy.com/18101099167.pdfIn PDF document text
    • http://limixumijegaf.epizy.com/dunuzep.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_off0000ec83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC83 5156 bytes
SHA-256: 059ff1eed62f94a528e10890f0ab5cd8458985cf9ed90717802ea557f8e15e72
font_01_sfnt_off0000fdef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDEF 10588 bytes
SHA-256: 791c61175d115fdd0dd896dc23ef6816b3152bd26b1bb5579eb266e0dd492750

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