Malicious PDF — malware analysis report

Static analysis result for SHA-256 87e6ec1f5b62836c…

MALICIOUS

PDF

89.3 KB Created: 2021-03-21 00:27:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 01c1b603ab046c8ac9a89936f6a956d0 SHA-1: c9500852489bd7ffdf9ca6e50ff332f0737205dd SHA-256: 87e6ec1f5b62836cbfc0924200d72dfe4071ebc229578681f1f90da94c7e03ce
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 a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to 'social media advertising guide pdf'. No scripts were extracted, but the presence of embedded URLs and the overall detection suggest a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/123?utm_term=social+media+advertising+guide+pdf
    • http://fefiwizam.sportsontheweb.net/59586281081.pdf
    • http://gexomafe.mypressonline.com/how_to_check_refrigerator_temperature_control_thermostat.pdf
    • https://cdn.sqhk.co/rifarako/bwAGege/lagawunivi.pdf
    • https://cdn.sqhk.co/disanefamu/Xggejde/lurupibebeniweze.pdf
    • http://rubewox.sportsontheweb.net/advertisement_project.pdf
    • https://cdn.sqhk.co/pabelewexo/ksYCYuU/android_box_for_sale_hamilton.pdf
    • https://cdn.sqhk.co/bugolajoxodu/fv4OMif/jurassic_survival_island_evo.pdf
    • http://dibosezufo.getenjoyment.net/does_lg_have_a_5g_phone.pdf
    • https://cdn.sqhk.co/mobobelelu/ibgdjbm/business_math_textbook_grade_11.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://mukanebesiva.atwebpages.com/83752527892.pdf
    • https://uploads.strikinglycdn.com/files/13b3b519-15e4-4060-a644-97b2bcbcb173/21073844920.pdf
    • https://s3.amazonaws.com/jivamubug/zewogirijamataloxafaxutok.pdf
    • https://s3.amazonaws.com/juzowilipi/ipod_touch_4th_generation_64gb.pdf
    • https://s3.amazonaws.com/levovod/lewolidajonivamedilifapow.pdf
    • https://uploads.strikinglycdn.com/files/d09cf217-fb00-47d0-bdb0-8f585f2cd8fd/husqvarna_120_mk_ii_review.pdf
    • https://s3.amazonaws.com/wiwamoxamo/supunina.pdf
    • https://s3.amazonaws.com/fadedosi/bifijevoda.pdf
    • https://uploads.strikinglycdn.com/files/c1ea7666-3b69-45a2-a2a7-a9833179ced0/mtd_lawn_tractor_deck_belt_adjustment.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001109e.bin
bdeb573b0b82f256036b328a404bea66a86ba4e1c523a97ee12d2e1c359453b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1109E 5520 bytes
font_01_sfnt_off00012347.bin
94f14abe131c5a57066c571d0279a94087361bb36a767ec70ebbfd27948721e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12347 11244 bytes
font_02_sfnt_off0001496a.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1496A 4324 bytes

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