Malicious PDF — malware analysis report

Static analysis result for SHA-256 b367557631243134…

MALICIOUS

PDF

70.5 KB Created: 2021-03-20 18:32:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9a4ea2d48f790884806db18ff0264061 SHA-1: 4fad564da209a37148192146af1abf646fb37498 SHA-256: b367557631243134ce7e6af937dc7af0ed02984e2fdee872e80faca4655933ec
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The document body, though heavily obfuscated, contains text related to 'Dell poweredge r710 maximum memory support', likely a lure to entice users to click on the embedded URL. The embedded URL, https://botokaw.ru/aws?utm_term=dell+poweredge+r710+maximum+memory+support, is the primary indicator of compromise, likely leading to a phishing page or malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://botokaw.ru/aws?utm_term=dell+poweredge+r710+maximum+memory+support
    • http://pusapev.scienceontheweb.net/rojovozopasamavi.pdf
    • https://cdn.sqhk.co/novigigexuxo/NjcvZjd/nail_salon_near_me_next_to_walmart.pdf
    • https://cdn.sqhk.co/doparibi/hijicha/audio_music_player_pro_apk.pdf
    • https://cdn-cms.f-static.net/uploads/4459921/normal_6019b3d8a4806.pdf
    • http://pobesegu.scienceontheweb.net/clases_de_fuego.pdf
    • http://tozokexijuxizis.iblogger.org/foundation_actionscript_3._0_animation.pdf
    • https://cdn-cms.f-static.net/uploads/4427080/normal_60298491be0de.pdf
    • http://zuvinesewuwiz.iblogger.org/95258667868.pdf
    • http://vetejula.mypressonline.com/new_marketing_techniques.pdf
    • https://cdn.sqhk.co/xiroxozalal/dK9Gihc/17798628837.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://sozikopozik.epizy.com/12491695084.pdf
    • http://tidisel.epizy.com/ea_bug_report_fifa_19.pdf
    • https://s3.amazonaws.com/bifadiwuwileji/wall_street_journal_customer_service_uk.pdf
    • https://s3.amazonaws.com/bejeseja/90522314207.pdf
    • https://s3.amazonaws.com/xakusineba/antenna_extra_light_font_free.pdf
    • https://s3.amazonaws.com/fosalizuzu/colonial_rule_in_southeast_asia_answers.pdf
    • https://s3.amazonaws.com/fedufiporara/connected_cars_market_report.pdf
    • http://mibodezoboro.rf.gd/hr_strategy_powerpoint_template.pdf
    • https://s3.amazonaws.com/xalasawu/examples_of_voiced_and_unvoiced_sounds.pdf
    • https://s3.amazonaws.com/jugobimuraje/sage_50_accounting_2016.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_off0000d4d8.bin
a4229272e5e41cc3c9308a79bd28f962e06f0cd894080a5a1179a0b8f921d0cd
pdf-font-stream PDF embedded font (sfnt) at offset 0xD4D8 5816 bytes
font_01_sfnt_off0000e8bc.bin
54fb4865541bbae02685b82c63115a1d27309274ac430819c8278a42da808613
pdf-font-stream PDF embedded font (sfnt) at offset 0xE8BC 10548 bytes