Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5ae9ed337398223…

MALICIOUS

PDF

72.2 KB Created: 2020-12-16 16:13:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 68f73471e93a0b430efed3dec7c966ee SHA-1: 51d2f9c9e3ceceaa18520bd247a2808c87646613 SHA-256: e5ae9ed337398223140463facce678ed311865960fb7c3b7c2f8810918e51788
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://gettraff.ru/123?utm_term=dead+trigger+2+unlimited+gold+apk+free+download'. This URL is presented within the document body, disguised as a download for a game cheat, indicating a phishing or social engineering attempt to trick users into visiting malicious infrastructure. The ML classifier also strongly flagged this PDF as malicious.

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://gettraff.ru/123?utm_term=dead+trigger+2+unlimited+gold+apk+free+download In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/muvunekagok/sbcglobal_email_settings_imap.pdfIn PDF document text
    • https://s3.amazonaws.com/befarekogol/atheros_ar9285_driver_windows_xp_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64332801-e1c4-4770-ab4e-f124b110b069/68081655240.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/425810c8-7fbf-4282-b012-964cf46fe5bb/etc_channel_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/bofake/divine_names_dionysius.pdfIn PDF document text
    • https://s3.amazonaws.com/vavejijitatofu/diablo_2_sorc_guide_2018.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a659134-8d6b-47ee-a7bd-baf0c7dd1192/first_outpost_mass_effect_andromeda.pdfIn PDF document text
    • https://s3.amazonaws.com/muvojugejoxip/deeper_in_you_by_sylvia_day.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7bbccb7-11b0-4c09-b5ad-ee6ea18da8ff/yfz_450_carburetor_problems.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc364d00a2757459bf2de76/t/5fc51c0c9d7936484030dd8e/1606753292888/mini_30_tactical.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_off0000dd48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD48 5468 bytes
SHA-256: 15946ab0b726efbe17f844f9cdc9e28b7c76f9a57e060feae1dec77023ef39f7
font_01_sfnt_off0000efeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFEB 10548 bytes
SHA-256: cbe65fbd7abc1c493ed1e695887d944aaa7c948f1331fc620eee7827173222ad

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