Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3881cc96bd05e35…

MALICIOUS

PDF

69.8 KB Created: 2021-02-28 02:54:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 36b6682ad39a3d76ea841ef3dfc6c1ef SHA-1: cee358b53662bc8c6e6cdb06dab6d92cb1cfad88 SHA-256: e3881cc96bd05e3505ef37ce74bf0b8390a2b6441b06c332e5a546393920f7ed
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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://druttle.ru/award?keyword=hp+w1907+lcd+monitor+driver PDF link annotation
    • http://wutomomar.22web.org/tamujoxitixajubiminevime.pdfIn PDF document text
    • https://cdn.sqhk.co/nixibaraje/chfgdhd/top_100_classic_rock_songs_of_all_time.pdfIn PDF document text
    • https://cdn.sqhk.co/govazilose/KVhbthj/cnc_wood_cutting_machine_near_me.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454052/normal_5ffaa4c9d5fbe.pdfIn PDF document text
    • https://cdn.sqhk.co/rigizisojix/coiaSxL/41472905655.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419433/normal_6014e1f1ba837.pdfIn PDF document text
    • https://cdn.sqhk.co/nowonipewo/ijdDWFA/55759415640.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380857/normal_600e055e047ab.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404730/normal_5fca384feebad.pdfIn PDF document text
    • https://lufosafol.weebly.com/uploads/1/3/0/7/130775677/xaxaravonul.pdfIn PDF document text
    • https://pafetujesotizi.weebly.com/uploads/1/3/5/3/135348857/xasevukuvexusediduw.pdfIn PDF document text
    • https://cdn.sqhk.co/vopupevomate/jbAnghT/battle_royale_simulator_roblox_codes_2020_june.pdfIn PDF document text
    • https://wupupuredizuso.weebly.com/uploads/1/3/4/8/134894828/gewekakasivikud.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wibitatazureb.rf.gd/java_programing_tutorial_for_beginners.pdfIn PDF document text
    • http://nolepukopele.epizy.com/fish_dichotomous_key_worksheet_answers.pdfIn PDF document text
    • http://pevoxino.epizy.com/35158464766.pdfIn PDF document text
    • http://duzebufulumaw.epizy.com/waruripofurujeb.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_off0000d43d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD43D 5376 bytes
SHA-256: 0b7d8bc4ff038c6e67782b4f7b4a25762d6c6871639e50e036724455ad332913
font_01_sfnt_off0000e698.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE698 10460 bytes
SHA-256: ff3415f359196305906baf55693b13187cfe7723aa332d8bc9cd2061b09c6567