Malicious PDF — malware analysis report

Static analysis result for SHA-256 d415f95639ab8e87…

MALICIOUS

PDF

97.1 KB Created: 2021-03-20 08:51:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 499e154216c522e675dbaf2dd0bf1b5a SHA-1: 3cc356fff526c2a3f72f9962f9cd0147be09e395 SHA-256: d415f95639ab8e8765a931a0dbe8eeb7b8b95f0d248a2f0e52f98198511e83df
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://yafferge.ru/123?utm_term=beyblade+metal+fusion+season+2'. This, combined with ML and ClamAV detections, strongly indicates a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded link suggest it's designed to trick users into visiting a malicious site, likely as part of a spearphishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://yafferge.ru/123?utm_term=beyblade+metal+fusion+season+2 In PDF document text
    • https://cdn.sqhk.co/guranotup/VOo2icl/10101926997.pdfIn PDF document text
    • https://cdn.sqhk.co/moromasi/jgGibib/60031861113.pdfIn PDF document text
    • https://cdn.sqhk.co/nexetifosam/sgiii9w/jegojuwoxutawamilezu.pdfIn PDF document text
    • https://cdn.sqhk.co/renosopezare/dQOvWPi/21390964401.pdfIn PDF document text
    • https://cdn.sqhk.co/lasetipulos/a1k4Tgh/93480206402.pdfIn PDF document text
    • https://cdn.sqhk.co/jesotipo/gggiahe/dixoref.pdfIn PDF document text
    • https://cdn.sqhk.co/tadeketoxab/ciidEjf/maxim_the_robot_hack_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/pufowuvikij/ZgiRooc/ark_survival_evolved_update_2._37.pdfIn PDF document text
    • https://cdn.sqhk.co/delobepaziw/djjhjig/download_monster_hunter_clicker_mod_apk_android_1.pdfIn PDF document text
    • https://cdn.sqhk.co/zavilisuga/jfhajbJ/download_game_boxing_star_mod_apk_android_1.pdfIn PDF document text
    • https://cdn.sqhk.co/posaleren/cDgB6Pj/subway_princess_runner_hack.pdfIn PDF document text
    • https://cdn.sqhk.co/rurufimibiwe/hg6hj7j/ferotafiwagiwudowotesetip.pdfIn PDF document text
    • https://cdn.sqhk.co/jirudumom/hiXyicV/meteor_shower_october_2020_michigan.pdfIn PDF document text
    • https://cdn.sqhk.co/feketukadoz/cjuFtY6/hungry_shark_world_online_or_offline.pdfIn PDF document text
    • https://cdn.sqhk.co/gepaxulunan/iQgg2hi/facebook_portal_mini_setup.pdfIn PDF document text
    • https://cdn.sqhk.co/muvotugi/ihggw5z/basketball_3_point_shots.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/699e0e37-f205-4fff-b585-3459e348bcf9/46289823855.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae340a4b-1319-40cf-9ed5-cd13a4688b33/the_new_strongs_expanded_exhaustive_concordance_of_the_bible_by_james_strong.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c401b69-a939-48d3-b6e8-fc30ee0f8292/mlb_playoffs_schedule_espn.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/152ec58e-ab8f-4fa9-b74e-cf48dfb4df68/49496393320.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46f3e23c-55b2-4574-9639-0a1c710fdcfd/mc9090_clean_boot_windows_ce.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_off0001125a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1125A 13060 bytes
SHA-256: fc8f73f543a6ccc2d682bc21f4a3afcfc49292a0816005d85c9bb7c62e01c972
font_01_sfnt_off00013d6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D6A 5380 bytes
SHA-256: 0481b42cc96d10bf9b33e1176eac5a5711a3ff3035b929f720b25f3e608b6166
font_02_sfnt_off00014fb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14FB4 10820 bytes
SHA-256: 3c3dae508d555f516b54f003d422e030faf87b30aa1546c844f861b1ece52943

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