Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4a8c99ddcf1604a…

MALICIOUS

PDF

79.9 KB Created: 2021-01-17 15:43:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: bc0fe6b58aa1d60d4ffef735ada153fc SHA-1: 71c9d5a62381c2c1793d2626e50427923425bcdb SHA-256: d4a8c99ddcf1604aef8a12f91b74adc4504195068f8f1c39b6c0d7213f95c157
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'traffnew.ru', which is likely used to redirect users to a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to a game trophy guide, aligning with common social engineering tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://traffnew.ru/123?utm_term=middle+earth+shadow+of+mordor+trophy+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4448110/normal_5f9f3538c8770.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393488/normal_5fa0be6323abb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477864/normal_5fe80e276ba65.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487184/normal_5fcf03e3754de.pdfIn PDF document text
    • https://cdn.sqhk.co/muxaferamet/gjH0ieW/lezatoruwafilobomana.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462368/normal_5fa4e24a30d69.pdfIn PDF document text
    • https://cdn.sqhk.co/romumoxoleno/dgdGMnr/tanupedunoxosunutefisim.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386839/normal_5fabe49a52de0.pdfIn PDF document text
    • http://tiwelonepozafuw.iblogger.org/14456574453.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fusuxitizubuka.epizy.com/21623089778.pdfIn PDF document text
    • https://s3.amazonaws.com/kezemiradigu/guided_wave_radar_level_transmitter_manufacturers.pdfIn PDF document text
    • https://s3.amazonaws.com/rebomedug/hyundai_elantra_2018_manual_transmission.pdfIn PDF document text
    • http://bojonovaja.rf.gd/nurobabitelatufukiziz.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxenipup/adjectifs_possessifs_exercices_fle.pdfIn PDF document text
    • https://s3.amazonaws.com/gotenukevepunin/nukapanowetulifowub.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/gamosemukulo.pdfIn PDF document text
    • https://s3.amazonaws.com/jarawaxanivu/pdf_us_mail_request_form_annual_credit_report.pdfIn PDF document text
    • http://gikunipif.epizy.com/19714935197.pdfIn PDF document text
    • https://s3.amazonaws.com/bisazabe/baptism_cards_templates_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jozetej/aquaponic_system_design_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/kikunojulejuj/latukerusakixasubitixo.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fae1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAE1 5656 bytes
SHA-256: fcefcb1f4095ca5fbb369fe9064a46196cc7792c87335898aafaec98cc91f38e
font_01_sfnt_off00010e1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E1C 10436 bytes
SHA-256: 0e4d2ed085faae0d1f48bcdff0929d0e7e4cc15cffef28ee2bf7e41da07e3c2f

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