Malicious PDF — malware analysis report

Static analysis result for SHA-256 c44985410c34a828…

MALICIOUS

PDF

89.7 KB Created: 2021-05-12 08:28:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c7270b402d44b4f0ae4402b30abd1a73 SHA-1: e3007624a0e2477d7f64964da6e7554ab8383bcc SHA-256: c44985410c34a82874e6882058b558505070b85fc1c903e16d4b992a258eddbe
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, identified by heuristics and a machine learning classifier as malicious. The ClamAV detection further confirms its malicious nature, flagging it as a phishing trojan. The document body, though heavily obfuscated, appears to contain keywords related to hardware, suggesting a lure to a malicious site for potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://dafemum.ru/strik?utm_term=pegatron+m2n78-la+rev+6.01+bios
    • https://wozukaziximuru.weebly.com/uploads/1/3/4/5/134587045/sesipemo_guzekediwiri.pdf
    • https://jokilexagazoxo.weebly.com/uploads/1/3/4/6/134602179/rogudesekodaj-xepuzujuwo-dukusaxoxoxis-nifujuwasev.pdf
    • http://fukiwurezopukof.mywebcommunity.org/indian_instant_pot_cookbook.pdf
    • https://static.s123-cdn-static.com/uploads/4457876/normal_6008a1c7aed1b.pdf
    • https://cdn.sqhk.co/lokovipazal/bhfygdF/halloween_nail_art_designs_2019.pdf
    • http://gasurorir.sportsontheweb.net/85500155966.pdf
    • https://wugedelujexot.weebly.com/uploads/1/3/1/4/131456191/863db4085f2ea2.pdf
    • http://linupobugilo.22web.org/15790657071.pdf
    • https://cdn-cms.f-static.net/uploads/4460709/normal_6029c5b434b27.pdf
    • https://mamulexujixi.weebly.com/uploads/1/3/5/3/135390653/wogumoxap.pdf
    • https://cdn-cms.f-static.net/uploads/4382952/normal_6025dffddab52.pdf
    • http://viniveba.mywebcommunity.org/is_26_old_for_a_horse.pdf
    • http://kujamemapevubu.mypressonline.com/sepovabopavukikajekotupoj.pdf
    • https://cdn-cms.f-static.net/uploads/4377388/normal_6049581748024.pdf
    • https://cdn.sqhk.co/nedupugifuka/P3hciVR/adding_upfitter_switches_to_ram_2500.pdf
    • https://cdn.sqhk.co/kagelemovo/euwhhgc/betufinanixakoku.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://veboxin.epizy.com/biodata_maker_for_marriage.pdf
    • http://pezefaxovojole.atwebpages.com/32595855368.pdf
    • https://uploads.strikinglycdn.com/files/7d7a9840-4a5e-42ef-90bf-f43b0d63850d/16112850105.pdf
    • http://dogonuzema.epizy.com/pozowizirunera.pdf
    • https://uploads.strikinglycdn.com/files/b153522d-2caf-4b0a-bf8b-b65a87896925/20062792488.pdf
    • https://uploads.strikinglycdn.com/files/0da5964c-9233-4117-ad00-67bdebab45ed/supply_chain_management_salary_in_south_africa.pdf
    • http://movoxafaxusuguf.epizy.com/guzuwizufe.pdf
    • https://uploads.strikinglycdn.com/files/620f7582-62c8-4cfc-9581-743fad95bbf7/bradley_smoker_replacement_magnetic_door_seal.pdf
    • https://uploads.strikinglycdn.com/files/4166f8f0-d44c-4dd7-af6f-69b5aa5c79ab/zusonazelukalimopirol.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011ecc.bin
b5a86bc6d22762c2e20c14bad25a902e570d5fe58f4de4263c4fef212824c96e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11ECC 6024 bytes
font_01_sfnt_off00013354.bin
4cfa18ef6a5c80e476cc142b662098de10af979698a6094f12f9f728466b27be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13354 11000 bytes

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