Malicious PDF — malware analysis report

Static analysis result for SHA-256 46e554711c218bf6…

MALICIOUS

PDF

74.7 KB Created: 2021-06-09 07:49:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 9ee19615d59038903d8232b313d6941a SHA-1: 2f26a63b3cd58f101d8e2d0e977dbbe59a12accd SHA-256: 46e554711c218bf60bf74a7a6951870b6c797b40df1ce29f5db09024a87d295c
134 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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 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.
  • 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://allytemp.ru/pbw?utm_term=crafting+and+building+apk PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4415300/normal_5feda00b166fb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369793/normal_5fc7471469d84.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451754/normal_60b86ee571638.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/287b7c1b-14c9-4b07-b652-85bb742d217c/sevozunesigusajotowumusez.pdfIn PDF document text
    • http://nunaruribeg.pbworks.com/f/samenuseleb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/446426bd-7eef-49ec-8476-6e777e180326/zejerexiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b616849-289a-4ee2-aa07-cba9ac2a7c4e/befat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b8be8eb-8013-447b-af29-14ab469e8df3/the_book_of_the_law_shall_not_depart.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cfc965ff-0a1b-424d-b0af-1bb847bf31ce/how_to_reset_thermostat_well_sensor_fault.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3564023e-5936-4426-8dcb-3b96b4a311c0/michael_vince_advanced_language_practice_with_key_download.pdfIn PDF document text
    • http://masigali.pbworks.com/f/fukazomebijarigojevabizi.pdfIn PDF document text
    • http://jivevisubido.pbworks.com/f/18444627273.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8cc7df76-57cc-4a65-b8fa-8c8636cc86e4/peavey_bandit_112_service_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b8d1ad0-d412-4007-8b3c-8204c8a0accc/allowable_bending_stress_southern_yellow_pine.pdfIn PDF document text
    • http://feteselulo.pbworks.com/w/file/fetch/144471579/bonnie_and_clyde_1967_full_movie_free_streaming.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1454a03d-68f4-43f6-9a4f-b66ca12feda8/66836596606.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5a247ac-62c7-4582-a8b1-0af76b6cfde6/77101518415.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b095af66-efe9-421c-9d6c-8c4093744b5b/72192241181.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dab35db3-78c7-405f-a031-16376b90e8a2/what_is_another_word_for_sensory.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/231be532-0454-4cf3-95a7-8bc181d000ee/what_is_my_fasting_challenge.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/039d8cee-6f53-4ec8-a9e7-0cc3357784dc/97024129475.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8699c959-34f6-40ed-b4dc-faeae936d940/wepobefi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee3d4de8-351e-4a58-8925-05e266e6276b/buzavefiwasikenenoziwon.pdfIn PDF document text
    • http://paderukut.pbworks.com/f/dirt_sprint_car_setup_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/084c0e25-3b81-46e5-899b-6e58f688275c/surodigisezazovofiwu.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_off0000e758.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE758 5140 bytes
SHA-256: 237fc15471bbec9f7c03013bd116295d34108fca25e8f65f6a504157e4abac79
font_01_sfnt_off0000f8e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8E0 10804 bytes
SHA-256: ae4df0c773d237d27cf0b3b36b18f2b7e80106da6bed0436bf9b227670627fc2