Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e2c94108814eb7b…

MALICIOUS

PDF

74.0 KB Created: 2021-03-07 19:08:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 6ec997ded10356aa0e020a8be0ca10fa SHA-1: 091177a899aef49d435ef6a2f2ef85296cfd654a SHA-256: 6e2c94108814eb7b4b6e684acf61ead0378c8f533f656c4155442768a9b53d1f
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 by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The file functions as a link farm, containing numerous embedded URLs pointing to potentially malicious or phishing content. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://kuzutuzo.ru/strik?utm_term=baby+bjorn+bouncer+bliss+anthracite+cotton PDF link annotation
    • https://zokanebawabor.weebly.com/uploads/1/3/1/4/131438448/addd9ef2584432.pdfIn PDF document text
    • https://dupemokuko.weebly.com/uploads/1/3/4/7/134759865/8907415.pdfIn PDF document text
    • https://beperupofifu.weebly.com/uploads/1/3/1/6/131636755/kusalak-bofudibatano-fasalasoxezuk-fidatofunefib.pdfIn PDF document text
    • https://birupilanakok.weebly.com/uploads/1/3/4/0/134017156/2974392.pdfIn PDF document text
    • http://funuvumolifedaj.iblogger.org/dakazemefipolukudopuse.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496216/normal_60373944872cd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489042/normal_5ffb8dc1dac6f.pdfIn PDF document text
    • http://zuwitirub.iblogger.org/23587648911.pdfIn PDF document text
    • https://sejexogubason.weebly.com/uploads/1/3/1/0/131070030/8844553.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406473/normal_6007421798a68.pdfIn PDF document text
    • https://soxoxalumowaju.weebly.com/uploads/1/3/4/7/134768556/e32b2921ae2bb02.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415964/normal_5ff49668bd6db.pdfIn PDF document text
    • http://dajugolita.22web.org/20814321506.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374368/normal_6020afefb824d.pdfIn PDF document text
    • http://jizimawaguda.22web.org/ireport_tutorial_sql.pdfIn PDF document text
    • https://pinobuni.weebly.com/uploads/1/3/0/9/130969003/kewirasojofi-fagezajogu-mefezemu.pdfIn PDF document text
    • https://xubisimas.weebly.com/uploads/1/3/4/7/134769706/9c2531.pdfIn PDF document text
    • https://balevowoperat.weebly.com/uploads/1/3/1/3/131397989/2431540.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pugalokero.rf.gd/argentina_visa_form_for_pakistan.pdfIn PDF document text
    • http://bemeridalazobox.epizy.com/fast_cache_cleaner_pro_apk.pdfIn PDF document text
    • http://gukupexokopiwug.epizy.com/nozonuvotevukimozezute.pdfIn PDF document text
    • http://jupanifoz.epizy.com/705955816.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

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_off0000e3bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3BD 5252 bytes
SHA-256: 44b46d7bdd25bd3e0c4772d4ad0c1dcfc311fe5f544671f01a0a757b3a922094
font_01_sfnt_off0000f59f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF59F 10656 bytes
SHA-256: 6713ca20c05ef93ea9a149cc52e726c57a74f8ba85dbda6a34c4db1e598ce038

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