Malicious PDF — malware analysis report

Static analysis result for SHA-256 f15345836d660ff0…

MALICIOUS

PDF

73.0 KB Created: 2021-01-30 20:56:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: ccaa96b25cb8508bc7f9f3c9fb5cc289 SHA-1: 1da435347d499893dd81c847a1dd1da9c401c34a SHA-256: f15345836d660ff004c7af166234bf93d3a18b8be1f08e7d417fb0ec216d4991
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links pointing to known malicious redirector infrastructure and disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document designed to redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 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://yafferge.ru/wb?keyword=leatherman%20multi%20tool%20warranty In PDF document text
    • http://muzoc.xyz/95806765893whbwf.pdfIn PDF document text
    • https://cdn.sqhk.co/bipobulif/2ji7lDD/disney_app_samsung_tv_error.pdfIn PDF document text
    • http://doxisolawasusig.66ghz.com/guvapokopiniwajorudufe.pdfIn PDF document text
    • http://ipatovaalena.ru/vawatibuterakuguxalejeziupl6t.pdfIn PDF document text
    • http://perevod-card2card24.site/my_boy_gba_emulator_pokemon_download7ilat.pdfIn PDF document text
    • https://cdn.sqhk.co/lozuzupadis/xNiblha/vunewavepitusigukis.pdfIn PDF document text
    • https://cdn.sqhk.co/nonuripot/UgRgc0Z/esp_under_seat_storage_toyota_tundra.pdfIn PDF document text
    • https://cdn.sqhk.co/girolivudafo/cibic8y/age_of_empires_2_cheats_steam.pdfIn PDF document text
    • https://cdn.sqhk.co/fegukajebaj/njfjhjj/74252651005.pdfIn PDF document text
    • http://loveantravel.xyz/rare_blood_disorders_list5se55.pdfIn PDF document text
    • http://dontbeshy.xyz/best_paintball_marker_for_self_defence69le6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zilapiwet.epizy.com/subukizuwufedofinolew.pdfIn PDF document text
    • https://s3.amazonaws.com/jumedemimo/5661002373.pdfIn PDF document text
    • http://jodaniti.epizy.com/nawixupofamapogevevud.pdfIn PDF document text
    • https://s3.amazonaws.com/waduzirader/47831585110.pdfIn PDF document text
    • http://lixanixuzuki.rf.gd/sample_accomplishment_report_in_spg.pdfIn PDF document text
    • http://sudimomovaw.epizy.com/hp_aruba_2930f_firmware.pdfIn PDF document text
    • https://s3.amazonaws.com/kakekojezutok/biwisozobuwajizanizezor.pdfIn PDF document text
    • https://s3.amazonaws.com/gosete/mit_app_inventor_for_iphone.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_off0000e112.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE112 4880 bytes
SHA-256: b897e2ae44b5e6d4fcb78aae982c617321b696c6a130f88afc94b4687804eef7
font_01_sfnt_off0000f196.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF196 10980 bytes
SHA-256: 2a2896e50885cb89e9fd5df55e130b993a9cd301062870982f07cbb2e72d66ff

Open this report in the interactive analyzer, or submit your own file for analysis.