Malicious PDF — malware analysis report

Static analysis result for SHA-256 d987ca297d3b4707…

MALICIOUS

PDF

77.5 KB Created: 2021-03-26 01:43:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: be52a545913f2262a7fca7bf0d318bf3 SHA-1: 3a3b43272d2860e4445e0b774bb3f28a02bec17e SHA-256: d987ca297d3b4707bf74021e2f673839c46fe5a740f57b919fb0472d80d0a81d
126 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. It contains numerous embedded URLs, with a primary suspicious URL pointing to 'lozipotod.ru'. The document body, though heavily obfuscated, contains text related to 'American news reporter killed in iraq', suggesting a lure to draw users to the malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://lozipotod.ru/123?utm_term=american+news+reporter+killed+in+iraq
    • http://christinaanddavid2019.com/toluposusudosotirimiteg7lk8v.pdf
    • http://misifebofol.mywebcommunity.org/13528314491.pdf
    • http://cosmeteca.com/129204452300o2i0.pdf
    • http://miwasigal.mywebcommunity.org/best_annotation_app_for_surface.pdf
    • http://jawixogu.mygamesonline.org/motejixupuxixodila.pdf
    • http://mattelipsticks.site/toshiba_dvr620_user_manualsrlbk.pdf
    • http://gowanenutik.mypressonline.com/40527751521.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/xonaxevetaf/bol._com_boeken_en_op_ipad.pdf
    • https://a52dd608-e7dd-4d50-8005-e0fd7a3896b4.filesusr.com/ugd/43d2fc_60481150a9c04da7a2f429bd387cc3f4.pdf?index=true
    • http://taliwugoj.rf.gd/learning_curve_in_psychology.pdf
    • https://7a69a04d-b0b3-478e-a927-895b34d3dd44.filesusr.com/ugd/159848_e4df9b697b4a450c9434ca2b38769d2a.pdf?index=true
    • https://6c8ebe11-725c-420b-823a-68bc39d02ad2.filesusr.com/ugd/3e87bf_d8a57154987548bbb4e9dd381b542806.pdf?index=true
    • https://uploads.strikinglycdn.com/files/234453a8-27ec-40ce-95cd-5a0797c3ee61/47395035382.pdf
    • https://dbba0f06-1911-40f0-8c80-a2638c7f81cc.filesusr.com/ugd/b13fd1_a32ff75ff7e742f2a1260936e9c609e4.pdf?index=true
    • https://s3.amazonaws.com/liwafo/facebook_lite_ios_apk.pdf
    • http://zakuvusebaj.epizy.com/mill_on_the_floss_restaurant_for_sale.pdf
    • http://nogibusap.epizy.com/hp_officejet_pro_8600_ink_cartridge_cannot_move.pdf
    • http://duxegejuw.atwebpages.com/seiko_solar_chronograph_v172_review.pdf
    • https://s3.amazonaws.com/genedonapubefe/73127349720.pdf
    • https://s3.amazonaws.com/viwoxuz/26648843790.pdf
    • https://s3.amazonaws.com/vizegemawokaxe/11495000483.pdf
    • http://bijigojufapoda.epizy.com/animals_images_in_png_format.pdf
    • https://uploads.strikinglycdn.com/files/9c513160-b813-4369-962b-91591b3d2677/audacity_free_download_windows_xp_full_version.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_off0000edce.bin
e822566cbd82dc5e2952264a28115469e919a2f31914410be82fbbbfa8903ea3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEDCE 5488 bytes
font_01_sfnt_off00010073.bin
f78e70d50cc080948498fb4a2e19496941c583547024cc021fec7c0947611ffe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10073 11316 bytes

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