Malicious PDF — malware analysis report

Static analysis result for SHA-256 93e6b8cf76cf8dc4…

MALICIOUS

PDF

75.2 KB Created: 2021-03-31 23:57:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3ad694bdd10b570113714f9186105a5a SHA-1: bafa5fbf9bfdf62a4fd6eee4efa0fb7017d52636 SHA-256: 93e6b8cf76cf8dc4aca09968b68638086e642c3df03c8595c44add552a01f254
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a large number of embedded external links, suggesting an attempt to redirect users to potentially harmful websites. The document body, though heavily obfuscated, contains metadata related to its creation, but no direct instructions or lures are clearly discernible.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://druttle.ru/wix?keyword=can+you+be+in+the+mafia+in+bitlife
    • https://cdn-cms.f-static.net/uploads/4424013/normal_600abc6170e38.pdf
    • https://static.s123-cdn-static.com/uploads/4367644/normal_5fe0f83fa2ef3.pdf
    • https://cdn-cms.f-static.net/uploads/4374540/normal_602f8fd6d9a45.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/aa32fd99-a6de-4e7a-bf27-d0ae925c0808/who_has_folding_chairs_on_sale.pdf
    • https://uploads.strikinglycdn.com/files/723b0e02-1b30-4808-90c1-4adc4e733c5b/76993501828.pdf
    • http://validexa.epizy.com/10454942794.pdf
    • https://d03ec42c-8b93-48d3-a61e-9aee396c0db4.filesusr.com/ugd/1e557c_30b942b4079c42b3bdecb39891a3bf94.pdf?index=true
    • https://uploads.strikinglycdn.com/files/7fe100ff-da07-4e6f-a758-821f9395547b/19436509882.pdf
    • https://uploads.strikinglycdn.com/files/9421c56f-67a7-4af1-a7f9-094af2ba9f6f/zopesuzumiku.pdf
    • http://luxorofanogefa.rf.gd/gunokexasusarisozudaw.pdf
    • https://uploads.strikinglycdn.com/files/dd1bb50b-210f-4101-9600-7fc5a4a2a9ba/linksys_ea4500_wan_port_speed.pdf
    • https://uploads.strikinglycdn.com/files/e235d824-e5fd-4dce-814e-e2b1580317f0/im_only_one_call_away_piano_sheet_music.pdf
    • https://uploads.strikinglycdn.com/files/021ed5cc-b81d-47a8-99f7-bee9ce81f40d/47245026619.pdf
    • https://uploads.strikinglycdn.com/files/f64be3aa-ed6b-4541-a7f0-0c9493c35d08/who_was_the_first_caliph_of_the_abbasid_dynasty.pdf
    • http://wotimadugol.epizy.com/27841366118.pdf
    • https://uploads.strikinglycdn.com/files/7d152884-d949-4c70-99c8-8b77c6a99af6/wordpress_user_role_editor_pro.pdf
    • https://8ed6bd9f-de2b-4923-b7df-82f95eb18a03.filesusr.com/ugd/7fa32f_e20cb7bf8daf4d4f92bda0cac65f43de.pdf?index=true
    • https://6a24fdd2-d4a5-4c4b-882b-0f3115751bcf.filesusr.com/ugd/04e6f9_44a0bf68ec9a4cf7a14391ae2e28333c.pdf?index=true
    • https://uploads.strikinglycdn.com/files/d1a1012f-14b3-4cc7-9c35-4fc12ad29377/68363144403.pdf
    • https://uploads.strikinglycdn.com/files/9e689621-2da8-4a17-8f31-2447459bd264/spoon_river_college_softball_division.pdf
    • https://uploads.strikinglycdn.com/files/66230e29-e9a6-4cf3-95c8-3905e2b6ea7a/how_long_to_cook_ribs_on_camp_chef_pellet_grill.pdf
    • https://f7927488-8152-43cb-a667-e231f58cc5c5.filesusr.com/ugd/950cc9_3dcc98cfa58d4bf9a4bec5aac641f09f.pdf?index=true
    • https://uploads.strikinglycdn.com/files/6b3583b8-0109-4c04-b06e-e5f83a093a9d/kodewuwokeleruna.pdf
    • https://e3055f73-6236-423b-b810-4bc1a15f300f.filesusr.com/ugd/fa12d1_819347005e894a7c80fe390cf5d565f7.pdf?index=true
    • 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_off0000ea61.bin
1766bc605dfd9137373eb82b4369a4cbd03478c44e9d5099cbd6f0ad42662157		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEA61 4880 bytes
font_01_sfnt_off0000fae0.bin
95bb19b941089516de75b134ae66849c31e5ed084944b046f2677e9e7449d2af		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFAE0 10756 bytes

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