Malicious PDF — malware analysis report

Static analysis result for SHA-256 f64705cfd3167d96…

MALICIOUS

PDF

52.9 KB Created: 2020-10-28 23:25:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 2bafb565ad320643b63277f3b9c323c0 SHA-1: be5c63da412667db257d17db6a23322403bfb81a SHA-256: f64705cfd3167d96f77f4139bdae453a2dcc16c75dbfecfe1fabbd6ea9cadb82
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://ttraff.me/pify?keyword=lg+extravert+vn271+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4393890/normal_5f8f8d140f40f.pdfIn PDF document text
    • https://bafovulik.weebly.com/uploads/1/3/1/0/131070506/pojowapugop.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403940/normal_5f912e068ea85.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370270/normal_5f98fcef7c2b0.pdfIn PDF document text
    • https://femevidawivuk.weebly.com/uploads/1/3/1/0/131071063/punan.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401971/normal_5f93d9815658b.pdfIn PDF document text
    • https://gajokemijibefe.weebly.com/uploads/1/3/4/4/134467094/a3568f0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383681/normal_5f9061c34c162.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367633/normal_5f876497bf871.pdfIn PDF document text
    • https://liziruji.weebly.com/uploads/1/3/4/3/134380663/1af1a9925e59eb6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369138/normal_5f8b17b9e485f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365608/normal_5f8726df28065.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378855/normal_5f8c3d72753d5.pdfIn PDF document text
    • https://pavowojavujide.weebly.com/uploads/1/3/1/3/131398322/cc5db455b7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tumasun/wevijujakinuwesafegaja.pdfIn PDF document text
    • https://s3.amazonaws.com/bejenosugede/demetilopikifixowo.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/panoxesezegebuje.pdfIn PDF document text
    • https://s3.amazonaws.com/wexukufedepim/list_branches_of_mathematics.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/teresixonibinimo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20241efd-518e-4c98-8248-d0c9a1d0dc8c/reviving_ophelia_play.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c258846-31c2-46e1-9779-1683febb0154/pidufedonufakumul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2d3731e-9f43-496e-89f4-fd77ffbd66a7/wobawunegexazawetovani.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/735ee243-5a64-4513-9c78-7e0f9049f989/how_not_to_summon_a_demon_lord_season_2_episode_1.pdfIn PDF document text
    • https://s3.amazonaws.com/robumuduluwise/ranaderokenuxiserik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c540f5cd-35ce-4fe0-ad29-40d153237a27/cause_and_effect_essay_outline_mla_format.pdfIn PDF document text
    • https://s3.amazonaws.com/jakujakula/58708408208.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/78262826938.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/firabogamorofi.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_off00008cff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CFF 5160 bytes
SHA-256: 2ac003115078dd9dae2d73212a5f8b396f79a83d6f0f8043b00538d178b43a31
font_01_sfnt_off00009e90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E90 11388 bytes
SHA-256: d91c9d9919c192b971881dcb436ace3a769281649c87124d76dab483fddebbb6