Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bda649b4c0a0cc6…

MALICIOUS

PDF

132.4 KB Created: 2021-03-08 10:52:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c57fecac06dc804906862c42622e311d SHA-1: 8c8e448d955c43f5e0f67c011ab5a240ee1a6fff SHA-256: 7bda649b4c0a0cc64039da125bdfcb911802fa9bd367772062a274fab92530ca
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. The document body, though heavily obfuscated, contains text related to 'parts of the microscope crossword puzzle answers', which is likely a lure. The embedded URI points to a suspicious domain, suggesting the document is designed to redirect users to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://nipisod.ru/wix?keyword=parts+of+the+microscope+crossword+puzzle+answers
    • https://cdn.sqhk.co/tememagitapo/jZjiyBX/invasion_zombie_empire_gameplay.pdf
    • http://www-sfr-fr-monespace.com/hungry_shark_world_all_sharks_and_skinsnhupn.pdf
    • http://sollabs.xyz/lords_of_the_fallen_class_guidemyper.pdf
    • https://cdn.sqhk.co/jasurisunav/jbhai4i/free_among_us_for_minecraft_pe_map_download.pdf
    • https://cdn.sqhk.co/fakolafebu/hjJghgh/tefiruxotiwanaxosebexo.pdf
    • http://guwizerawefoke.iblogger.org/rufizajotokulu.pdf
    • https://cdn.sqhk.co/mivuxakadu/iL6oY2e/venus_flytrap_flower.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/vavabi/jusekulowufuwilobix.pdf
    • https://uploads.strikinglycdn.com/files/d09b975e-c529-44df-b083-0f3e36f2a3df/bebejolukazulaxefe.pdf
    • https://uploads.strikinglycdn.com/files/def0b377-278f-4640-905c-200a58ebdbbc/does_bitcoin_trade_all_day.pdf
    • http://bunakakivukutus.epizy.com/21725916778.pdf
    • http://kixixiwibatogit.epizy.com/bible_quiz_questions_and_answers_in_malayalam.pdf
    • http://vipaviveza.epizy.com/suvumowatesiwusu.pdf
    • http://rosaboz.rf.gd/denosaxamanelo.pdf
    • http://magomigubilo.rf.gd/21385554338.pdf
    • https://s3.amazonaws.com/pasawexawinogad/scorch_trials_free_movie_online.pdf
    • https://s3.amazonaws.com/lazolu/pathfinder_kingmaker_fighter_weapon_training.pdf
    • http://nekaxikafixof.epizy.com/bean_bag_cad_block_free.pdf
    • http://pufigopinenise.epizy.com/which_bissell_crosswave_is_best_for_pets.pdf
    • https://uploads.strikinglycdn.com/files/37bd7c6b-76bd-4328-830e-0871aae1b133/papokojifiligusixapa.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001b5c2.bin
6fc6b4f9c1754354b80d8c7bbb222958d75629fe719cc88b28b6cb044771a993		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1B5C2 5420 bytes
font_01_sfnt_off0001c817.bin
51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1C817 1800 bytes
font_02_sfnt_off0001d0a5.bin
24fa8d0a94b447c646dbb0c6139339fc9b0e281a2a6812af11adefe49dbac2af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1D0A5 10636 bytes
font_03_sfnt_off0001f4da.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1F4DA 4324 bytes

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