Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5020113a60cc23f…

MALICIOUS

PDF

54.4 KB Created: 2020-10-29 06:03:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: 9102afea7ed1aa32da8e61eb68b3bc90 SHA-1: 670ab909d9e407a3700cfc3a933513202a933f9e SHA-256: b5020113a60cc23faf238ccd77bb5f426d5e188538609391282e64d26706b33f
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://cctraff.ru/aws?keyword=wii+u+pro+controller+walmart In PDF document text
    • https://cdn-cms.f-static.net/uploads/4371809/normal_5f8f29bf0fd95.pdfIn PDF document text
    • https://nozudasukexip.weebly.com/uploads/1/3/4/4/134441991/9583811.pdfIn PDF document text
    • https://jopalezaleloloj.weebly.com/uploads/1/3/1/3/131380469/30a0d.pdfIn PDF document text
    • https://moguvikob.weebly.com/uploads/1/3/0/8/130874292/588d000a5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412568/normal_5f996171463ef.pdfIn PDF document text
    • https://tusefekojeseto.weebly.com/uploads/1/3/4/4/134437698/towob_wapusowor_ludabasufunit_falememev.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365642/normal_5f874fbb685b1.pdfIn PDF document text
    • https://nivozigagu.weebly.com/uploads/1/3/4/4/134439663/lilakuvi_dodaduruduza.pdfIn PDF document text
    • https://wimixexaselu.weebly.com/uploads/1/3/4/3/134324609/7509806.pdfIn PDF document text
    • https://javezevefumutew.weebly.com/uploads/1/3/2/7/132740470/8217003.pdfIn PDF document text
    • https://xuwuperozaposa.weebly.com/uploads/1/3/2/3/132303395/47af603adb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374682/normal_5f944349a19f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384143/normal_5f9a11787ebfe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413000/normal_5f99d9a7a980b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388427/normal_5f8f3e63db48f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365655/normal_5f87179d0ba82.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369334/normal_5f99b2b93e53a.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/e44a6581-4f89-4a2d-ba74-f086a653d6f4/biotek_synergy_h1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c0e6db3-f12d-482e-bf82-f05ae51d9aa9/mewegetojujesovuvezom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c886cead-a088-44e7-916a-23b5dd083fad/98251917587.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75cff921-3b1c-4d50-984e-4c4f3cce3ecb/59694384274.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d558b5d-4719-490f-bada-9004e80c3e57/nesegod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65fa5877-4d1d-4d3c-bbb2-a120275d4d96/how_to_use_rem_bot_discord.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86f25346-c218-4468-9304-380cede1487b/16633522539.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19575dad-eaad-4f99-9472-94ddb194be43/best_buy_pearl_city_phone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2dbb745f-be9f-48dd-a0f5-f99c8f8fef14/oster_clipper_guide_combs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e816032-f49d-44d4-b0cb-ce5bb4f7580b/kim_possible_movie_so_the_drama.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007355.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7355 5004 bytes
SHA-256: 0232767a87a768fa83b80f1f2a1d4862dbe28aa4dd37f5dba3bfa2762dae6805
font_01_sfnt_off0000845d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x845D 11092 bytes
SHA-256: 8d90d5ef67c8061db62d84458bba074da874f8d6d4ac57785f1d669fef2252b9
font_02_sfnt_off0000aa16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA16 20288 bytes
SHA-256: bbb0217326e77fc84922df7b153a0174c7c26c216a92ec0c92f26d860ac467f9