Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f5ba1f47b432788…

MALICIOUS

PDF

77.0 KB Created: 2021-03-23 03:02:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 012b52745bcd9a73b5c60c8074a84850 SHA-1: e6f47fbb2976172104e1a7803cddab010a7c9193 SHA-256: 6f5ba1f47b4327889b96fc79b60b19bbad83f00fe0b927eba23acfe5ec834fd2
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, specifically as a phishing trojan. It contains an embedded URL pointing to 'baarspo.ru', which is likely the primary destination for the phishing attempt. The document body, though heavily obfuscated, appears to be a lure related to the cost of a grill, a common tactic to entice clicks.

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://baarspo.ru/strik?utm_term=how+much+does+a+large+big+green+egg+grill+cost PDF link annotation
    • https://cdn.sqhk.co/neliwuwo/hbhju4p/animal_radiography_positioning.pdfIn PDF document text
    • http://uscreditcheck.info/fender_mustang_2018hd7uw.pdfIn PDF document text
    • https://cdn.sqhk.co/livisade/iijjehf/how_to_turn_roaming_off_on_iphone_6.pdfIn PDF document text
    • http://loveantravel.xyz/61963992200iyzuv.pdfIn PDF document text
    • http://fotaper.iblogger.org/30856536619.pdfIn PDF document text
    • http://kolagozisil.mywebcommunity.org/excel_vba_msgbox_no_prompt.pdfIn PDF document text
    • https://cdn.sqhk.co/bilanogakiw/jjlih9T/stickman_jailbreak_10_funny_escape_simulation_game.pdfIn PDF document text
    • http://ostanni.fun/98101881434mzebn.pdfIn PDF document text
    • https://cdn.sqhk.co/sirazisiluz/qxk4jc3/creative_cv_templates_psd_free.pdfIn PDF document text
    • http://magnitoli-2ekran.site/nikon_coolpix_l610_battery_type0dlyi.pdfIn PDF document text
    • http://gratoram.site/beat_mp3_2._0_rhythm_gamezjxyw.pdfIn PDF document text
    • http://ferafukapawap.scienceontheweb.net/how_to_use_vinyl_iron_on_with_cricut.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/ritoma/what_kind_of_cost_is_direct_labor.pdfIn PDF document text
    • http://xunevonobi.epizy.com/new_version_whatsapp_plus_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/tawovojo/sound_recorder_android_10.pdfIn PDF document text
    • https://s3.amazonaws.com/bugutaj/21955742267.pdfIn PDF document text
    • https://s3.amazonaws.com/pujinit/ighsau_basketball_score_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/jobavo/aggiornamento_chrome_per_android.pdfIn PDF document text
    • http://tixaxit.epizy.com/bsc_1st_year_inorganic_chemistry_book.pdfIn PDF document text
    • https://s3.amazonaws.com/kewuxejikiwe/jovutorumasefodaze.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e4b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4B4 5544 bytes
SHA-256: bdf0a6f9f142758c66e3481fdc7427ca73fd2c5fda12abe074a76abadbd6af96
font_01_sfnt_off0000f769.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF769 1800 bytes
SHA-256: daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e
font_02_sfnt_off0000fff7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFF7 11224 bytes
SHA-256: a39e286bb2d63d8bd8401df3741a9c29f070f682909a85c68013b54a4ce395cc

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