Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc7624321fc052ac…

MALICIOUS

PDF

332.0 KB Created: 2021-03-15 04:17:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 7f56234fe216487c5303d0ee03cc846e SHA-1: a9a60780598ef74e396965ca20aa1d98b224f117 SHA-256: fc7624321fc052acce360c22f352874af919c3668935a85f069f2ba358108b29
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of an external URI pointing to 'bologen.ru' suggests an attempt to redirect the user to a potentially harmful site. Although no scripts were explicitly extracted, the PDF structure and heuristic firings indicate it's designed to exploit vulnerabilities or trick users into visiting malicious URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9314

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://bologen.ru/123?utm_term=banana+flower+hd+images PDF link annotation
    • http://rukozhop-guide.com/does_the_bible_explain_free_willium1f.pdfIn PDF document text
    • https://cdn.sqhk.co/junikesiza/bjghgja/.pdfIn PDF document text
    • http://arenaprobet.com/best_vegan_pistachio_ice_cream_recipedbzrg.pdfIn PDF document text
    • http://quinzsy-studio.design/nozobulaweresafomaba8l307.pdfIn PDF document text
    • https://cdn.sqhk.co/dedogupazib/gdYwVie/nolababodigol.pdfIn PDF document text
    • https://cdn.sqhk.co/kajutizikodu/jirijic/534641596.pdfIn PDF document text
    • https://cdn.sqhk.co/wituwuxevef/RiarCEs/barca_vs_real_madrid_match_report.pdfIn PDF document text
    • https://cdn.sqhk.co/lokalofobox/Bx9R9hh/fc_barcelona_logo_wallpaper_android.pdfIn PDF document text
    • http://tryadasert.online/1493709551702lr9.pdfIn PDF document text
    • https://cdn.sqhk.co/nixafusoda/icicrJv/logefoputetubiwerawute.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jifesu/pijegopadakigowofuf.pdfIn PDF document text
    • https://s3.amazonaws.com/nevowimo/canmat_isbd_guidelines.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db94fbbf-5311-4385-a155-7377caab64b6/15674713083.pdfIn PDF document text
    • https://s3.amazonaws.com/vawoginele/lasagna_sheets_recipe_indian.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf314da2-8862-4c1c-8f50-f97f2e24a406/how_to_fail_at_almost_everything_and_still_win_big_audiobook.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5c039f0-93f4-4ed2-898d-f34d2bd26a5c/who_is_tony_in_season_3_of_the_crown.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaporam/73624526024.pdfIn PDF document text
    • https://s3.amazonaws.com/vufupu/77968405442.pdfIn PDF document text
    • https://s3.amazonaws.com/bisazabe/53157207701.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1537fde5-c359-46b9-87c1-343f4a01ebfc/xusawitite.pdfIn PDF document text
    • https://s3.amazonaws.com/pujirageg/fagabo.pdfIn PDF document text
    • https://s3.amazonaws.com/sojuravewi/46124505893.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwosil/adobe_audition_music_editor_free.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004e622.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E622 5464 bytes
SHA-256: b982e1d02befd3cbe8b004ddf2370333543f85b8e2c2f03732c0d5c23ceeace6
font_01_sfnt_off0004f8a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F8A2 12492 bytes
SHA-256: b9bb679600d3e9438090dfbe2243f3a4250a948d8564eb553545cd605c858dd3

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