Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5101cd299f8442c…

MALICIOUS

PDF

70.2 KB Created: 2021-03-18 10:22:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e39877871c95e64581f58d192477e85 SHA-1: bcc9ca0208da0151cf483bc036c0cd214a1ca2d9 SHA-256: b5101cd299f8442ce01681ab52f44914a264786ce2d928727f264f0723e7b1d0
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, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to trick the user into downloading further malware or phishing for credentials. While no scripts were directly extracted, the PDF structure and embedded URLs suggest a phishing or malware distribution 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://crophysi.ru/award?keyword=ullrich+aluminium+extrusions+pdf
    • http://kolekewoni.mywebcommunity.org/fetorad.pdf
    • http://roxelejabojafe.scienceontheweb.net/suxejelozopowuwegebaki.pdf
    • http://zobotalemogi.sportsontheweb.net/nimijufotixamanujana.pdf
    • https://cdn.sqhk.co/linidivez/jchDagi/ledukixutesararenezuxi.pdf
    • https://cdn.sqhk.co/zofizitene/dghGIjc/wagivisemagemupiw.pdf
    • http://guparob.mywebcommunity.org/python_interview_questions_and_answers_free_download.pdf
    • http://grandov.pro/what_do_apple_symbolize_in_a_dreamn35xg.pdf
    • http://smartcoin.design/bewejd0z84.pdf
    • http://lixebafevoku.mypressonline.com/papipikaxunidizebu.pdf
    • https://cdn.sqhk.co/juwafajem/ieii2ji/pudapokigedoramelogivu.pdf
    • http://domsale.xyz/247216643207dpuk.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/zuwosil/2563087139.pdf
    • https://s3.amazonaws.com/vuxagixil/reporter_gene_gus.pdf
    • https://s3.amazonaws.com/feseni/the_hunger_games_catching_fire_2013_dual_audio_720p_download.pdf
    • https://uploads.strikinglycdn.com/files/933517e7-135d-4537-885b-8d0170fe64c1/how_much_is_tom_hardy_worth_2019.pdf
    • https://uploads.strikinglycdn.com/files/d2a0eb41-3816-4e67-934d-f0ad95c7670c/fender_super_champ_xd_mods.pdf
    • https://uploads.strikinglycdn.com/files/2eb1bee8-0080-4da7-b0cb-7fd87e3d75c9/how_much_iodine_do_i_need_while_breastfeeding.pdf
    • https://s3.amazonaws.com/tofizo/rejection_candlesticks.pdf
    • https://s3.amazonaws.com/vebenok/vehicle_information_monthly_charge.pdf
    • https://s3.amazonaws.com/jiguwuzobozobaz/hp_pavilion_27-q202in_price_in_pakistan.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_off0000d350.bin
288204fd1444c248c76e23eb98be789f6d3fe20a30bcededfcbc23438aef5983
pdf-font-stream PDF embedded font (sfnt) at offset 0xD350 5452 bytes
font_01_sfnt_off0000e5ba.bin
4e7a3305aa2876eb97da21816e0ee3e5ea247c6d4ea4877c919d38c4f5d33615
pdf-font-stream PDF embedded font (sfnt) at offset 0xE5BA 10672 bytes