Malicious PDF — malware analysis report

Static analysis result for SHA-256 464ae07416a18f22…

MALICIOUS

PDF

82.8 KB Created: 2021-03-30 12:40:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5fa7add1aef263a4f4670750d063bbca SHA-1: 9568dd2d8d265a34a3ebadbe9f948fc64d687d0a SHA-256: 464ae07416a18f22d0e72e632aab48d4cb8e4019cef37d3b1f46bdb5f3412716
164 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains a large number of external links, many of which point to potentially untrusted domains, suggesting a link farm or phishing attempt. The presence of a 'download' button heuristic further supports the idea that the document is designed to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 6

  • 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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://ponafet.ru/strik?utm_term=world+of+warcraft+chronicle+volume+1+download
    • http://nudistoff.club/84411302192obosx.pdf
    • http://podcard2020.site/vatukijonarivaxuwugafa8fln0.pdf
    • http://samoe-samaya.ru/loxumxyzf3.pdf
    • https://cdn.sqhk.co/fujotojaxob/c1ggokc/greatest_tank_battles_of_world_war_ii.pdf
    • https://kewojuposadut.weebly.com/uploads/1/3/4/3/134374438/262314.pdf
    • http://udilische.club/century_arms_ak_pistol_reviewmhmqg.pdf
    • http://fb-copyright-help-from.com/32057352324w84tp.pdf
    • https://fidimamafiw.weebly.com/uploads/1/3/4/6/134624465/4367f01.pdf
    • https://cdn.sqhk.co/watexoba/lbfly5y/9034158627.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/55524a22-6c59-444f-9c4f-3ceb844f07f3/does_cashing_a_check_show_up_on_statement.pdf
    • https://uploads.strikinglycdn.com/files/f64104e3-c367-4572-93ee-69c0996a62cc/79953010827.pdf
    • https://uploads.strikinglycdn.com/files/05b51225-9d10-42d9-819a-a494585400a2/mainstays_tufted_futon_assembly_instructions.pdf
    • https://uploads.strikinglycdn.com/files/5ac1975f-1a4a-4bf5-9cb9-12e448e518a1/xururasazevaneresure.pdf
    • https://uploads.strikinglycdn.com/files/9dbf3295-60af-42bd-9aef-a394d2b3b92a/doduvi.pdf
    • https://101c3d73-5e22-4da1-a203-a3a2a794ce88.filesusr.com/ugd/69a512_fcfbcf37cd7f43d4a04018d0b99c6a44.pdf?index=true
    • https://f039f7e9-c7fa-441d-bf3d-2f0e35d6be10.filesusr.com/ugd/80685d_1c9246fa2a624c179217c325fb70e5f8.pdf?index=true
    • https://4461694d-a6f7-4a69-895a-ff5ddeb3c622.filesusr.com/ugd/f504fb_215d50962c6c4627a250c1445c783a93.pdf?index=true
    • https://0e8f88b9-656e-4b05-9cd8-8bd477f85547.filesusr.com/ugd/95b9ea_de2ba4ac280442bf997f1c0b1db7f146.pdf?index=true
    • https://uploads.strikinglycdn.com/files/322d0ec6-5a7b-4e98-9997-07e156dd4974/the_raven_boys.pdf
    • https://uploads.strikinglycdn.com/files/bb247f19-28d9-462b-97e3-1532509cb628/v07_smart_wristband_instructions.pdf
    • https://uploads.strikinglycdn.com/files/6dde24ad-0e5d-4f63-8724-914526080426/kenmore_elite_calypso_washer_repair_manual.pdf
    • https://ddf64d59-5240-4154-9987-17dfc28e22c7.filesusr.com/ugd/cec570_9423d69a3332448399757c3e5131c669.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e4d9.bin
4c852a6c6ee44e8a4932e47b243a97a55bb113618611ba55599566401fc52318		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE4D9 5184 bytes
font_01_sfnt_off0000f668.bin
c11fa35d25303715c9b221357ebe752efd6edafb2eab55e1b355dffd146b61ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF668 10416 bytes
font_02_sfnt_off00011a3e.bin
e9fe716c2abc985b12a899a49d5539e4e8be1b56d50c083b30290d85a2a7c848		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11A3E 16092 bytes
font_03_sfnt_off00012f06.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12F06 4324 bytes

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