Malicious PDF — malware analysis report

Static analysis result for SHA-256 7dad757b6f4cd5da…

MALICIOUS

PDF

75.2 KB Created: 2020-12-17 03:11:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: c86ad1e6b8235fc4c726c2a32c43cea2 SHA-1: 9c074ec1e6ab2e46ad84742a5d4ce74b3cffdf9c SHA-256: 7dad757b6f4cd5da2e253dffc82e5fb3e3cfc02650d24506e21aa24971b8e4bc
154 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, disguised as a download for a popular music album. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded URL is the primary indicator of compromise, likely leading to a phishing or malware download site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://cctraff.ru/strik?utm_term=frank+ocean+blonde+full+album+download In PDF document text
    • https://fosilele.weebly.com/uploads/1/3/4/5/134593504/4856330.pdfIn PDF document text
    • https://litolojinoforiw.weebly.com/uploads/1/3/4/7/134721995/8430870.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc597a0f9866f3fd2f3d113/t/5fca37b16a94db17e49b327b/1607088050329/48579317641.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5c959405d5340f34b395e/t/5fcdfbc6d235d37878ea79f3/1607334855832/wezidovuguk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/198feb82-fbc3-42c3-83f7-ff11b3c24a4f/11817012702.pdfIn PDF document text
    • https://s3.amazonaws.com/najipavez/zibasaziju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d1b1836-5cf0-400a-9704-1ec1d653e9d5/5913896693.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc12ec9f7cf8c75402cc175/t/5fc4829dfa04221c71b02a84/1606714013932/27574062062.pdfIn PDF document text
    • https://s3.amazonaws.com/pazatuv/8290360924.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6f160717a0f60c4005b87/t/5fcbe3ae85bc3a28a617ca2a/1607197614206/empire_warriors_tower_defense_td_strategy_mod_apk.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc01ccfc14dfd36feed28e9/t/5fc10113f3de5e49b587f185/1606484247718/wonder_woman_skirt_uk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a707812-372a-4b36-9851-ac7436ac9479/zorejudigatejoxez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd17ef5d-4ecb-4abe-98dd-76681fcb7136/busatuwimotivabekumepelu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5dbcd8ea-2060-43b1-9fa8-38887d3e0dec/46643773300.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d67b8ef7301f8b106140/t/5fc416d3cb3e0f5771cff3dc/1606686420853/guild_starfire_iii_for_sale.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc7817281da8a590db0efa2/t/5fcaf0f16fd93023bcfbca9c/1607135474287/chhota_bheem_speed_racing_game_apk_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb83c0ad-76a7-4c62-9642-a322c219d64b/419891316.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_off0000eba0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBA0 5240 bytes
SHA-256: af6333ae71b5d1999014f58d8be25d073f4b45769b8a1e3529360d2200f87ac4
font_01_sfnt_off0000fd71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD71 9928 bytes
SHA-256: 90583b2458dff38fc44aa85414cc1ad88ae38b46b5744936e63c1a334d6548d5

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