Malicious PDF — malware analysis report

Static analysis result for SHA-256 a50bc82bc542eb41…

MALICIOUS

PDF

92.3 KB Created: 2021-03-28 19:48:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 26a35b33396abe1d13c8e5c1386933d7 SHA-1: 4128c9d6d19da24d56bfaea70298e23c0bbf86a4 SHA-256: a50bc82bc542eb41e7c4b43483089ce5519976e96635c25427256951f767419e
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a website disguised as a search result. This URL is likely intended to host malicious content or lead to further phishing attempts. ClamAV detection and ML classification strongly indicate malicious intent, likely related to phishing or trojan distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://vilenefex.ru/wix?keyword=ico+shadow+of+the+colossus+ps3+trophy+guide
    • http://gejejasofubi.mywebcommunity.org/gajovo.pdf
    • http://menesoger.iblogger.org/liste_aliments_riches_en_fer.pdf
    • http://tijukilebag.getenjoyment.net/62320735645.pdf
    • http://zoguponuwuxoli.medianewsonline.com/clear_and_present_danger_symbolic_speech.pdf
    • http://fesufobototezer.mywebcommunity.org/4986109977.pdf
    • http://kokilubowo.22web.org/74466769205.pdf
    • http://nuxuzuruguli.mypressonline.com/falumalozisoro.pdf
    • https://cdn-cms.f-static.net/uploads/4369665/normal_600f2fbb9f5fd.pdf
    • http://kogutojoveso.mywebcommunity.org/64589788003.pdf
    • http://zevupixikug.mywebcommunity.org/58369223779.pdf
    • https://cdn-cms.f-static.net/uploads/4450426/normal_5fd14cb29acf4.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/wetevali/why_does_tessie_die_in_the_lottery.pdf
    • https://s3.amazonaws.com/galinikagopit/akali_guide_probuilds.pdf
    • https://uploads.strikinglycdn.com/files/5e9cc9d6-c3b2-456b-838e-ae955cd1000d/51701962065.pdf
    • https://s3.amazonaws.com/pusixa/symfony_4_api_platform_authentication.pdf
    • http://xuvagakinev.rf.gd/9567779729.pdf
    • http://nibewisule.epizy.com/bestwap_odia_songs_2019.pdf
    • https://uploads.strikinglycdn.com/files/69715802-ad2c-458b-b963-dbee013e7f4a/junajuritapobupovasoxuv.pdf
    • https://uploads.strikinglycdn.com/files/0bf93565-523a-4748-ab40-b3d336d6409f/casio_f91w_strap_replacement.pdf
    • http://tuxefofoxomar.epizy.com/bazogakisasudi.pdf
    • https://s3.amazonaws.com/xetasif/bizubagakifo.pdf
    • https://uploads.strikinglycdn.com/files/7df4bd9b-c4f3-4d20-b08f-d63ce52daf6f/kenomovagomexakew.pdf
    • https://s3.amazonaws.com/toniseligiwuzux/public_relations_specialist_jobs.pdf
    • http://seroroxunabolu.onlinewebshop.net/jabezudo.pdf
    • https://uploads.strikinglycdn.com/files/fb701b2f-5063-43e0-b2a1-36aa0a119189/37514162975.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_off0001287f.bin
dec68682280b8cab8cffa3c03838717fed696652fa83756fad57934bd6efef23		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1287F 5712 bytes
font_01_sfnt_off00013c10.bin
e5810c224c1f56e75d9b963000f339ef78fa373bb7b058d91a4af4fffe049196		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13C10 11072 bytes

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