Malicious PDF — malware analysis report

Static analysis result for SHA-256 676e0ef2a03f4f1c…

MALICIOUS

PDF

75.9 KB Created: 2021-05-16 19:18:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 02399b30e3a5e1fc0a2ae688b2536b24 SHA-1: c78be2e7205a3d230870c5a1fce2b69b106d7616 SHA-256: 676e0ef2a03f4f1c7c71039679987566274e618f6643b5d3a5493872261b880e
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a phishing or trojan-like behavior. It contains numerous embedded URLs, with one prominent URL pointing to a domain that appears to be a link farm designed to redirect users. The document body, though heavily obfuscated, contains text related to modem lights and wkhtmltopdf, suggesting a lure to trick users into clicking on the malicious link for information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://pelibifir.ru/strik?utm_term=what+does+orange+light+mean+on+modem PDF link annotation
    • http://pemotutafid.mywebcommunity.org/pride_and_prejudice_elizabeth_and_darcy_character_analysis.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483075/normal_5fdc4715f01a4.pdfIn PDF document text
    • https://cdn.sqhk.co/wimiwupo/ayhheFM/rokenonuvamis.pdfIn PDF document text
    • http://ramedefinu.getenjoyment.net/jizigilemuzosokezuw.pdfIn PDF document text
    • http://zivemigidefis.mypressonline.com/wudemi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482882/normal_5ffa4e58f2a3b.pdfIn PDF document text
    • http://jeratojovu.66ghz.com/zawemorixixogunalasudike.pdfIn PDF document text
    • https://cdn.sqhk.co/gopefovepagi/lgjkhfB/final_fantasy_viii_remastered_walkthrough_xbox_one.pdfIn PDF document text
    • https://cdn.sqhk.co/nowonipewo/E3LialO/penopozafogusoxebet.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pibowaloboko.rf.gd/big_countdown_timer_software_free.pdfIn PDF document text
    • http://kisowadurodab.epizy.com/fagovawokobudupiwitez.pdfIn PDF document text
    • http://lekinip.epizy.com/xaredaz.pdfIn PDF document text
    • https://5e024257-ca51-40df-b6b5-a3104c7b7124.filesusr.com/ugd/97368a_ab7b35dfd04745cda97924cac8e8637d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/viboxikuz/who_fears_death_tv.pdfIn PDF document text
    • https://2a983b51-2e13-4971-8c1f-a5bca3ab4353.filesusr.com/ugd/e1a791_17f8a5ace26f434484bf42f0b4359f0b.pdf?index=trueIn PDF document text
    • http://tofufelu.epizy.com/18626037217.pdfIn PDF document text
    • https://s3.amazonaws.com/zasepo/27380364068.pdfIn PDF document text
    • http://zajupulavofawi.myartsonline.com/30293655505.pdfIn PDF document text
    • https://e60c805d-b9e1-47fc-b045-983511e9ac1f.filesusr.com/ugd/116bb2_22dbae091ce64426b9158293526d0843.pdf?index=trueIn PDF document text
    • http://bopiguxa.atwebpages.com/loxukef.pdfIn PDF document text
    • https://6e678f60-abc6-404c-883a-cd1729fdffee.filesusr.com/ugd/e4291f_e3240a1695bb4259ac09c94a35853a9f.pdf?index=trueIn 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED9F 5252 bytes
SHA-256: 05681614a2fec8b91014cde2ec34f6b00259c239227afb10b3cf4a8c85cbd818
font_01_sfnt_off0000ff5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF5D 10264 bytes
SHA-256: 9894dec5c6860ee8b12dfcf2e3f9def5b5579c3c96f18ad0d6fb4918151461ea

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