Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e4f97d30e8287b7…

MALICIOUS

PDF

57.8 KB Created: 2020-10-19 02:10:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: d1a6acf78818f6ccce5a206454f21746 SHA-1: d5bcf90971b5ddb2f7ef8a521753516d117c738b SHA-256: 0e4f97d30e8287b72220b7dcdbc88b93bfea5f54a084e89dc4c9240c4c17ebc1
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://ggtraff.ru/strik?keyword=free+bux+for+pewdiepie+tuber+simulat In PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/09b03b.pdfIn PDF document text
    • https://jowodetuleguzu.weebly.com/uploads/1/3/1/8/131856173/pilebaka_mowudur_nerewomib_sosodeso.pdfIn PDF document text
    • https://zalopajozi.weebly.com/uploads/1/3/1/4/131453352/8790609.pdfIn PDF document text
    • https://lanasasaf.weebly.com/uploads/1/3/0/8/130815311/7488359.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/belapigojat.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/zikarab.pdfIn PDF document text
    • https://dojudiwoju.weebly.com/uploads/1/3/1/4/131406456/lipabewazaboz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2216/3876/files/govisatogijow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/6003/0359/files/rockford_fosgate_r250x1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4750/9416/files/18024835480.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3f19628-7fa3-4923-aca7-e9c92c1d9aef/18820066114.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f4646f4-a152-4c12-a30c-c6a14f58788a/84686153307.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05bd8719-b36e-4c59-8d08-28d7279a9903/93849805797.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/041df18e-4836-4c38-8d34-00c63236900e/1367196300.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13930680-d60e-40b4-9b5a-574c7497b9c8/zavomixobu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/4080/2469/files/14663447372.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/5572/8808/files/seagate_backup_plus_2tb_user_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6104/3605/files/long_beach_state_map.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d034dfd0-1ae2-4c49-8049-784e14959b99/causality_story_part_2_walkthrough_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/793d2e01-11d3-472b-9022-24c80ddb89ef/72229152677.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d0491a9-6889-4bd3-bfdf-1c613d2f0b7a/foberujaxan.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000081ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81CE 5440 bytes
SHA-256: c47798b5c25393e4898620535759164bc5c51654d0424e091a8d7ed92495f52f
font_01_sfnt_off00009440.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9440 3008 bytes
SHA-256: 83ee758ea04b60e881461bd20a01d7ed40c633060ca4ae868c5d8b75527ef44b
font_02_sfnt_off0000a0f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA0F0 10352 bytes
SHA-256: b8639bb1a935aef31320a6967fe71d17dd817f5f0ea6ab8b466afa4d9e1eb418
font_03_sfnt_off0000c481.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC481 16092 bytes
SHA-256: e9fe716c2abc985b12a899a49d5539e4e8be1b56d50c083b30290d85a2a7c848