Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bd79f654885a25f…

MALICIOUS

PDF

76.7 KB Created: 2021-05-17 13:00:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 93cad87aeda557baf38952ea2aa0d3a0 SHA-1: ae1327cc25a074d39437bf07d89242acf13bb3a0 SHA-256: 7bd79f654885a25fc63aab8ac718593e23b41857148bf93ce23f9e1046ede6d2
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier returned a high probability of maliciousness. The document body, though heavily obfuscated, contains references to 'Elk m1 gold panel' and the authoring application 'wkhtmltopdf', suggesting a lure for a specific software panel. The presence of multiple unknown URLs, including one directly referenced by a PDF_URI heuristic, indicates a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://nipisod.ru/strik?utm_term=elk+m1+gold+panel
    • https://cdn.sqhk.co/nebafori/hjcdrib/tap_race_3d_download.pdf
    • https://cdn.sqhk.co/lunapolakezo/jpsjasL/file_hide_android_app_download.pdf
    • http://investmag.org/embassy_of_the_democratic_peoples_republic_of_korea_in_bangladesh9tepu.pdf
    • http://all-system7.work/finding_angles_in_circles_common_core_sheetsbiizt.pdf
    • https://cdn.sqhk.co/rilabotib/2LPichd/90493215465.pdf
    • http://marketitaly.info/zoom_recorder_h4n_review1d7bz.pdf
    • http://workmonster.net/pogavufo0c4x5.pdf
    • https://cdn.sqhk.co/matikefateri/jjNzn17/mugizo.pdf
    • https://cdn.sqhk.co/nesorosuxim/ibd2gjf/72722766545.pdf
    • http://niludop.22web.org/90344510252.pdf
    • http://reduslim-italiaoficial.site/rolululowonamirikerasebkn18.pdf
    • http://xakubilowiva.22web.org/argumentative_essay_outline_graphic_organizer.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/fejenijovekozu/characteristics_of_mbti_personality_types.pdf
    • https://s3.amazonaws.com/nefagolom/beef_curry_recipes.pdf
    • http://kediresij.epizy.com/steins_gate_ending_song_download.pdf
    • http://bogiginilaxano.epizy.com/how_to_reset_my_garmin_vivofit_3.pdf
    • https://s3.amazonaws.com/bevekizadoxuj/zowuxakefixigowuva.pdf
    • https://s3.amazonaws.com/subopukomanaw/can_you_calibrate_omron_blood_pressure.pdf
    • http://fajopalexidu.rf.gd/19721631329.pdf
    • https://s3.amazonaws.com/divelikubapiwaj/23665211487.pdf
    • http://pijularof.epizy.com/glossary_of_computer_science_terms.pdf
    • http://zunebitalubale.rf.gd/ada_guidelines_2020_espaol.pdf
    • https://s3.amazonaws.com/zeworibuzoza/sample_divorce_answer_and_counterclaim.pdf
    • http://nitusul.rf.gd/certificate_of_origin_format_usa.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_off0000eeb9.bin
fd4b881b74a205a63230b64b50877b18b1a98e8d79f8cc12a63085667b56c150		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEEB9 5080 bytes
font_01_sfnt_off0000fffd.bin
20da371561119a04311a6bd0cb04b3e9aba61d358bcb12d60d1054e3c7d0b361		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFFFD 10956 bytes

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