Malicious PDF — malware analysis report

Static analysis result for SHA-256 6cf47739dd1f7ec0…

MALICIOUS

PDF

79.9 KB Created: 2021-04-20 00:33:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 95818a453af9f1d45d596543e3b011c6 SHA-1: aa05f06c4f9d4b97271e68bed330f919ac6d2341 SHA-256: 6cf47739dd1f7ec039323c1ae513e530f4ae69f7040deb4e108775617306bde0
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains numerous external URIs pointing to disposable hosting and link farms, suggesting a phishing or malware distribution scheme. The document body, though heavily obfuscated, appears to be a lure related to a camera review, designed to trick users into visiting these malicious links.

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://botokaw.ru/strik?utm_term=canon+eos+20d+8.2+mp+digital+slr+camera+review PDF link annotation
    • http://kitafoged.medianewsonline.com/tobodut.pdfIn PDF document text
    • https://cdn.sqhk.co/zepipawetopi/ckhdXie/download_mod_game_rally_racer_dirt.pdfIn PDF document text
    • http://vomamafawib.scienceontheweb.net/rujusuvajepupenozu.pdfIn PDF document text
    • https://viwitilabepimep.weebly.com/uploads/1/3/2/6/132695477/kewofimenarubut-sedadesavuxafi-zidovufal.pdfIn PDF document text
    • http://jaxagogilexet.sportsontheweb.net/47239570745.pdfIn PDF document text
    • https://cdn.sqhk.co/fekerepusa/jfQ9lic/mabozifigufubas.pdfIn PDF document text
    • http://circus.market/jalagelowulofibijexg0t8z.pdfIn PDF document text
    • http://mstmail.space/251691436555hbz6.pdfIn PDF document text
    • http://rabemedexisubis.mygamesonline.org/lezivomosexive.pdfIn PDF document text
    • http://eferevole.com/tera_nude_modorr56.pdfIn PDF document text
    • https://cdn.sqhk.co/gofuzurafano/ijgehdv/50514051036.pdfIn PDF document text
    • https://bajomunimiru.weebly.com/uploads/1/3/1/0/131070213/352587.pdfIn PDF document text
    • http://reggis.info/bot_binary_20194azbc.pdfIn PDF document text
    • https://cdn.sqhk.co/wifopuzuxiba/iguehiU/gegumolesidazu.pdfIn PDF document text
    • https://cdn.sqhk.co/jarebomu/cX56Rjg/best_voice_changer_free_pc.pdfIn PDF document text
    • http://reduslim-italy.site/migaxazufujawarodubekefex8u74r.pdfIn PDF document text
    • http://findssldz.xyz/43352875444i7044.pdfIn PDF document text
    • http://presente-top.store/measurement_the_metric_system_worksheet_answersakt8o.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://nupuzawov.onlinewebshop.net/multiplication_sums_for_3rd_grade.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ebb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBB0 5856 bytes
SHA-256: 387625b0c1a0b434175d9f6b68ea48b505e44ce6c2f63af3bf7ee0a86f5a3afd
font_01_sfnt_off0000ffa1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFA1 10608 bytes
SHA-256: 3ba7a3d6b071a409a9db57994dae4ccc51fa474a5b70e36b5ccc75d9534243d1
font_02_sfnt_off000123ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123EA 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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