Malicious PDF — malware analysis report

Static analysis result for SHA-256 dea30e16398996ac…

MALICIOUS

PDF

44.0 KB Created: 2020-10-25 18:05:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 7f5c7477ac54ecec64a0a758bcac035e SHA-1: 7fb57178919b2f71cf30962cd3c55a4b46310e06 SHA-256: dea30e16398996ac90d6ded424208657e9e928b8482b0448e27b4886ddd6e27c
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://gettraff.ru/aws?keyword=descriptive+and+limiting+adjectives+exercises+pdf In PDF document text
    • https://jukafubu.weebly.com/uploads/1/3/0/8/130874261/fafutidigadopi.pdfIn PDF document text
    • https://tugajepefur.weebly.com/uploads/1/3/1/4/131453805/vapinapururozisuwara.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/lonevu.pdfIn PDF document text
    • https://zesopupejilit.weebly.com/uploads/1/3/0/7/130738861/poxopapefaw.pdfIn PDF document text
    • https://wefamojugibe.weebly.com/uploads/1/3/1/1/131164519/nubagovovu-wanapudusawok-tizire.pdfIn PDF document text
    • https://xesofawerokiju.weebly.com/uploads/1/3/4/3/134356335/kivenubitapura.pdfIn PDF document text
    • https://buliduxefexefux.weebly.com/uploads/1/3/1/6/131636978/d9329f.pdfIn PDF document text
    • https://jovikuveditowe.weebly.com/uploads/1/3/0/8/130874612/9750708.pdfIn PDF document text
    • https://zimiduninu.weebly.com/uploads/1/3/1/6/131637103/tezaje.pdfIn PDF document text
    • https://turomanusogagi.weebly.com/uploads/1/3/1/4/131453559/mubuvevubuvolumalez.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/6ab78870-8350-4735-830a-67390dbc02a5/ecuacion_de_nerst.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9541e1c0-39fa-40c3-931d-0719d27052ab/95918535338.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d708f3a-136c-497d-af93-95c8f4774d57/136303919.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/987999d0-0bb7-4e55-af8f-4644f064dd2c/white_christmas_duet_sheet_music_fre.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20d831fc-15b4-4c56-b5d9-9a2191ec16b1/14052896708.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/wiseguy_nicholas_pileggi_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zonebon/redevusur.pdfIn PDF document text
    • https://s3.amazonaws.com/petuzutemixuvod/bapegep.pdfIn PDF document text
    • https://s3.amazonaws.com/jivuxo/50822915276.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/65372504939.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/lightweight_reader_for_windows_10.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/8837/0582/files/basics_of_economics_worksheet_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0501/7249/files/80803214258.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/8627/7536/files/kingo_root_apk_for_android_7.0_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/6173/4297/files/figurative_language_in_a_modest_proposal.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005fda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FDA 5356 bytes
SHA-256: e40107f509768be23001a6f5cad73b0918d70a7ea11450c589bc9925761cc3c5
font_01_sfnt_off00007201.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7201 9856 bytes
SHA-256: cd1c9d0b5bb43007cc5d1bb3615155495170a9738f9fa145a94666a6d9a2c059
font_02_sfnt_off000093b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93B2 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34