Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a6c571956debe16…

MALICIOUS

PDF

77.2 KB Created: 2021-03-20 01:01:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2ed17dc6fc2d76870ab89418ef7aa6b2 SHA-1: edcdc73b1bfc52a1d4002e2d108dae08055726e9 SHA-256: 5a6c571956debe165e66ab29d68b94cf22935670719d3de8ea57d87d6d4acf01
96 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to deliver a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to pregnancy information to entice clicks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jacksth.ru/award?keyword=abdominal+pain+in+pregnancy+pdf
    • http://konolux.medianewsonline.com/morula_blastula_gastrula.pdf
    • https://cdn.sqhk.co/kixarozikej/5cn9nNb/xebisaxijaraseroropufawo.pdf
    • https://cdn.sqhk.co/verexoleki/hj7uugo/author_balzac_s_first_name.pdf
    • https://cdn.sqhk.co/dikozogub/hfgdxWv/sky_wifi_password_problems.pdf
    • https://cdn-cms.f-static.net/uploads/4388177/normal_6021856ae1737.pdf
    • http://zumigiguba.22web.org/fakubavebowitekujoju.pdf
    • http://fobativ.mywebcommunity.org/the_masque_of_the_red_death_questions_and_answers.pdf
    • https://cdn-cms.f-static.net/uploads/4369185/normal_602375dad3c82.pdf
    • http://titibes.iblogger.org/pronunciation_of_chiari_malformation.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://zijiwaras.onlinewebshop.net/how_to_repair_ice_maker_whirlpool_refrigerator.pdf
    • http://xolevusafo.myartsonline.com/wejesedazukisufuvejidi.pdf
    • https://uploads.strikinglycdn.com/files/383786c3-3dfd-4153-bd0c-7163241f7849/star_trek_voyager_ship_plans.pdf
    • https://uploads.strikinglycdn.com/files/bf0aaf99-c3b9-4fab-924c-b3da3f4ff10a/what_happens_at_the_end_of_the_game_of_life.pdf
    • http://legifotuvikib.epizy.com/black_boy_haircuts_designs.pdf
    • http://sumidemeg.epizy.com/cahills_vs_vespers_book_2_free_download.pdf
    • https://c4e42e93-254c-4ba8-b495-737f84002742.filesusr.com/ugd/ddb60a_8e8e0d92ed9449fd967375b1f315cc01.pdf?index=true
    • http://nibudikugi.epizy.com/tumblr_gif_online.pdf
    • https://uploads.strikinglycdn.com/files/1d31a25e-1df1-468a-8e36-c79f4e2822a0/ryobi_honda_pressure_washer_not_starting.pdf
    • https://5c09c65f-4728-49e3-9562-8692e696fc4f.filesusr.com/ugd/32acb1_96f8fa0fefb048edbd0463c1ce09f554.pdf?index=true
    • https://6f465708-eb37-4ee2-8658-ebeec6cd93ea.filesusr.com/ugd/4bb103_f25779d3a6794c64b855a01dee23bbed.pdf?index=true
    • 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_off0000eed7.bin
4539d608bad7cb69f5039a0c4a24d049d0ca4ddb1bc44a45ba033852278d5b82		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEED7 5528 bytes
font_01_sfnt_off00010199.bin
3e05db25b78613d67169564c8733a00b14dbaab2bed69edb7cd8e96e709c6c67		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10199 10568 bytes

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