Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bcca2dca4b8ceb6…

MALICIOUS

PDF

69.7 KB Created: 2021-03-09 21:51:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 2c87e51dcce72c552a26366dee944d32 SHA-1: 9800253e8b84587f1bb796cddabe4b62b401d282 SHA-256: 7bcca2dca4b8ceb6ee1b5c09adba69258497e25c387d5d86290aa6efc2f7d623
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://fokemale.ru/wix?keyword=student+survival+guide+osu PDF link annotation
    • http://bunnygummy.ru/732222452456g0e9.pdfIn PDF document text
    • http://reabook.online/numibigi85wu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424682/normal_601dea6f95c79.pdfIn PDF document text
    • http://zvezdasevera.online/contemplate_definition_and_synonymsdebfz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366399/normal_5feb520d73002.pdfIn PDF document text
    • http://podarokinsta.online/83826567078c4vs2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/97fa2d0c-6dba-46a3-9503-2a597902925e/tirepidajutelixabejimili.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df48ac58-f9b5-447c-9b22-53151e36dcb9/vupomekixun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ffcfc74-12ca-4976-83f6-77117f1c0355/86360968758.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e396b5d2-af81-4ef6-8d69-d807edd211b9/bow_tie_pasta_taco_casserole.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/461cedd4-55ca-46e0-84da-2937b7ac7504/19478476766.pdfIn PDF document text
    • https://ebd73b9a-b255-48a5-b781-2bd84b483b4c.filesusr.com/ugd/956c05_ebb6ea3588ea477db32247aef0a72ad4.pdf?index=trueIn PDF document text
    • https://d8acad56-eb9a-42d1-a06c-a695c5b02328.filesusr.com/ugd/0ad6c7_91fc07113e9a4d628e72815bd5482dd6.pdf?index=trueIn PDF document text
    • https://6a1e2a5f-c456-4288-b9d5-5378f87870fb.filesusr.com/ugd/076fac_2202c4060ff348658f4976c05a7e762a.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/09eb4fda-b3d0-440e-aece-753303b9631b/gikigukefitedu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58a2cae1-1c90-4686-8fd6-9a104c46c66c/how_to_start_music_industry.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/197d9b39-f6a7-407e-94a2-8816796cbc1c/juvofoxavutatezorira.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/341648f2-07fd-4480-b2d4-730c5eeb6dec/penny_stocks_to_buy_youtube.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da6da2bc-0011-45db-8069-757fde3097ca/dukaxujabifapubo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1cd5e23b-f589-4e93-b75f-58ad942fd303/how_to_load_nails_in_ryobi_airstrike_p320.pdfIn PDF document text
    • https://010f2e21-25ca-4560-806d-08cbbb7c7db1.filesusr.com/ugd/74a852_341e2111b5434e62b915cef3b5c8a72d.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/90d59f01-12cc-4718-9206-519f648a76d7/jojal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8445cb6-acb9-474e-bb4c-3dfb7db06876/brute_electric_start_lawn_mower_wont_start.pdfIn PDF document text
    • https://a179b4bb-f9e1-4b0b-8685-f881d2afde68.filesusr.com/ugd/0fdb6d_b004d970b83a4d6cb8175a928577408e.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6b76893-541c-442a-a70c-f33622104f42/vunejuwofijawuj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d4fc5e3-bea5-4c6b-ad91-fc47460e5ae8/chicago_airport_fedex_drop_off.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_off0000d4e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4E2 5156 bytes
SHA-256: 01a1a312096f27fd5f2ccc74138db0b6d3561bd92e363fe965a233e13681f4b8
font_01_sfnt_off0000e67c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE67C 10184 bytes
SHA-256: 308db1d3df1706380e5faeee2da289d6ce22743f2f1a0e33675161776f7017ea