Malicious PDF — malware analysis report

Static analysis result for SHA-256 596a8b5ebd907dc9…

MALICIOUS

PDF

72.7 KB Created: 2021-05-06 20:33:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0d0cfa327f90fd8dfeabfb6bcb4e5468 SHA-1: 2ab5234a1e89f4668fd21e814504cd35bb608c39 SHA-256: 596a8b5ebd907dc9f5f315c38b157b9fccfe9324d1dbea3a1012ef0b572caa48
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, contains keywords related to a chainsaw sale, suggesting a lure to entice users to click the malicious link.

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://resalured.ru/strik?utm_term=homelite+super+xl+925+chainsaw+for+sale+ebay
    • http://tejasatobes.medianewsonline.com/hp_stream_11-ak0000na_laptop_review.pdf
    • http://storeeu.info/47093270609uomwc.pdf
    • http://fakexexu.sportsontheweb.net/53419510783.pdf
    • http://tenipimutav.mywebcommunity.org/is_msm_better_than_glucosamine.pdf
    • http://wordsidepost.top/98791202454oz6ne.pdf
    • http://canonsburglake.com/joseph_prince_marriage_video2sojs.pdf
    • https://static.s123-cdn-static.com/uploads/4451970/normal_5ff0ea6e617ba.pdf
    • https://static.s123-cdn-static.com/uploads/4471249/normal_5fca5ad0b9dd7.pdf
    • http://webdefilmizle.com/nekijebimolitumvt5i.pdf
    • https://cdn-cms.f-static.net/uploads/4447888/normal_6061d1c327b16.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/nowonovege/odisha_police_job_information.pdf
    • https://s3.amazonaws.com/nonipesikiri/diablo_i2010_tuner.pdf
    • http://zirutabu.myartsonline.com/cubic_spline_fit_with_natural_end_conditions.pdf
    • http://faleferesevo.onlinewebshop.net/jobawafop.pdf
    • https://s3.amazonaws.com/zurovajij/48294314075.pdf
    • https://s3.amazonaws.com/lixuzo/how_to_buy_stock_in_canada_cibc.pdf
    • https://s3.amazonaws.com/risalenefazozo/background_powerpoint_sejarah.pdf
    • https://s3.amazonaws.com/jinabom/maquina_de_coser_singer_simple_2263_manual.pdf
    • https://s3.amazonaws.com/jazofi/built_to_sell_review.pdf
    • https://s3.amazonaws.com/fedufiporara/24233335382.pdf
    • https://s3.amazonaws.com/matogapibelifiv/warranty_return_form_north_face.pdf
    • https://s3.amazonaws.com/wulagisi/what_ink_does_the_hp_envy_5010_use.pdf
    • https://s3.amazonaws.com/fokapikow/44212535058.pdf
    • https://s3.amazonaws.com/pidufozu/cual_es_el_precio_del_petroleo_en_la_actualidad.pdf
    • https://s3.amazonaws.com/wazorixekunafob/34363635912.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_off0000da1a.bin
3c4f0a4e83609456f2c8fd466eba5e386653e885a32fb435fe86cffc137fa418		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDA1A 6032 bytes
font_01_sfnt_off0000ee91.bin
48c59e66fb7091f06dc0e06d7b86067ceb09f472fbc71fbcf56eb7dbd7f403e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEE91 10716 bytes

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