Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f3741f8b8cf53f0…

MALICIOUS

PDF

82.2 KB Created: 2021-03-03 05:46:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: c264f415da404789f956fcb513223af5 SHA-1: bb40874377c8e50c3460e02cc7a2ee8c0448a95f SHA-256: 5f3741f8b8cf53f0f1d2167f970ec241e86f97eb904eb0998afd68fa37eab9d3
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a website disguised as technical specifications for a Dell laptop. This URL is likely a lure to a phishing or malware distribution site. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://gimoguvi.ru/award?keyword=dell+e6410+i7+specs PDF link annotation
    • http://mujudesuxiropa.sportsontheweb.net/82819098926.pdfIn PDF document text
    • http://digitalcalakk1.xyz/nakedutivezdo1zd.pdfIn PDF document text
    • http://talakam.space/xfinity_tv_app_errorqevnf.pdfIn PDF document text
    • http://sakulog.sportsontheweb.net/xumoxogarewodili.pdfIn PDF document text
    • http://nigavereke.mygamesonline.org/42286119229.pdfIn PDF document text
    • http://fbdirect.site/remington_ultimate_50_caliber_stainless_bolt_action_muzzleloader_-_26inx24tv.pdfIn PDF document text
    • http://prizinsta.online/riwamewetisilurolw1ytc.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
    • https://s3.amazonaws.com/zidenigad/90909931673.pdfIn PDF document text
    • http://wadoromutisagar.myartsonline.com/nordyne_gas_furnace_pilot_light.pdfIn PDF document text
    • http://vilatelisoto.onlinewebshop.net/4_pics_1_word_level_23_answer.pdfIn PDF document text
    • https://s3.amazonaws.com/vojapu/41168668445.pdfIn PDF document text
    • http://raninidifawem.rf.gd/sapeliwusezutumer.pdfIn PDF document text
    • https://s3.amazonaws.com/limepusotanal/bhavans_school_hyderabad_admission_form.pdfIn PDF document text
    • https://s3.amazonaws.com/lakujusitejojet/verufefususapotasami.pdfIn PDF document text
    • https://s3.amazonaws.com/nisoxow/templates_wedding_invitations_free.pdfIn PDF document text
    • http://durunorutap.epizy.com/fatigue_management_policy_template.pdfIn PDF document text
    • http://bumejefivoxigo.myartsonline.com/70024848249.pdfIn PDF document text
    • https://s3.amazonaws.com/nilafafakem/11674285985.pdfIn PDF document text
    • http://pubopebiwofaz.epizy.com/7062880038.pdfIn PDF document text
    • http://tifavamifikas.myartsonline.com/jerokubed.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_off0000f936.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF936 4628 bytes
SHA-256: e6b8851f7df8c521b3e42d900cd30efcfc71432bd884c376948a1ff95b2d82c3
font_01_sfnt_off00010908.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10908 10568 bytes
SHA-256: c10f650ed471948135ec19754a03816f1bbde11a4992ccc299701c212b791297
font_02_sfnt_off00012d47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D47 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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