Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6ba785cc2b13b63…

MALICIOUS

PDF

71.7 KB Created: 2020-12-21 17:44:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9aa00abf99f486b5e52f23980184c530 SHA-1: b27a3eb9be238f0bb690fb5e91c5867cebb75dca SHA-256: d6ba785cc2b13b63225951d84e788db591bc0676f961cabdb005831652e5390a
156 Risk Score

Malware Insights

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

The PDF contains a significant number of external links, with one identified as a malicious URL (`traffnew.ru`). The heuristic `PDF_SEO_LINK_FARM` indicates a deliberate attempt to create a link farm, often used for SEO manipulation or to host malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution via the identified URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://traffnew.ru/strik?utm_term=two+guns+tattoo+bali
    • https://valezofijamope.weebly.com/uploads/1/3/4/4/134445284/lipavazakuf.pdf
    • https://fedijukesubi.weebly.com/uploads/1/3/4/6/134600597/3794193.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/8d25e5f8-ceee-4004-a051-604ae0093a14/ama_format_paper.pdf
    • https://uploads.strikinglycdn.com/files/2d6d8d7b-80c3-4b4e-b14d-0844144543f4/21677588467.pdf
    • https://static1.squarespace.com/static/5fdfe9c7f67c863bcd18f266/t/5fe002f12baf317dc3bae240/1608516337774/av_malformation_mri_radiology.pdf
    • https://uploads.strikinglycdn.com/files/f70ce4c4-fd00-4d5f-ae18-920a0494dc47/july_2017_printable_calendar.pdf
    • https://static1.squarespace.com/static/5fc11e8e16f6d44b07c01948/t/5fc364912dd96f5918596091/1606640785864/fortnite_mod_apk_free_shopping.pdf
    • https://static1.squarespace.com/static/5fdfcf47f67c863bcd18c9eb/t/5fe00966e64f570315516459/1608517991359/1847668081.pdf
    • https://static1.squarespace.com/static/5fc5a7d717e72026400a7969/t/5fc82cc9d17d55300fa3e7f1/1606954187279/xiwanatapireguxoreduwezik.pdf
    • https://uploads.strikinglycdn.com/files/82e01047-9a64-4958-a8cf-be8f72c0fae1/bright_house_cable_channel_guide.pdf
    • https://static1.squarespace.com/static/5fc1a7b9084698658e639c4c/t/5fcc9b5a978da30c56f8ac96/1607244634712/fashion_salon_game_download.pdf
    • https://uploads.strikinglycdn.com/files/4fa29947-1b31-4fc7-8fc4-311f7eab9f48/88406003687.pdf
    • https://uploads.strikinglycdn.com/files/ce95948d-df0a-4d8b-ba42-82e77010d79e/engine_manual_for_troy_bilt_lawn_mower.pdf
    • https://static1.squarespace.com/static/5fc0ef8fc6229360ecad283f/t/5fcbcd3a551bdc47e7b182fc/1607191867142/nascar_slot_car_track_sets.pdf
    • 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_off0000bd88.bin
1923be00a34b705aa8140f50fd6693ed9cc0d86cc5c31f4783eb49bd0ade7a9f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBD88 4940 bytes
font_01_sfnt_off0000ce7a.bin
3cac7dd337beae05a51cedc8ab4137ff3cd8d7da0be7140b8775b47b275a3510		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCE7A 1912 bytes
font_02_sfnt_off0000d7a9.bin
118c7d66d63e80e829b1b54b9c4c59ae4bbd70e2aba920f419f0a1b2825c536e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD7A9 10520 bytes
font_03_sfnt_off0000fbe3.bin
f3b95f1269985bafc3dfb9b5b35e76df8a4d57039a143c013aed99c7cf3a4a89		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFBE3 16344 bytes

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