Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fc71dab8c7dc75d…

MALICIOUS

PDF

78.1 KB Created: 2021-03-30 13:36:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: a8b7643006475869d1858e8c1672a7f5 SHA-1: 69e187d10380bd751fcc521dc911180195f667b2 SHA-256: 2fc71dab8c7dc75dd36d1951278687e693ed511dbb5e233d75409f3ffe3c66f1
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, with one prominent URL pointing to a suspicious domain ('botokaw.ru') that is likely used to host a phishing page or distribute further malware. The document's structure and embedded links suggest it is part of a phishing campaign, aiming to trick users into visiting malicious 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
  • 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://botokaw.ru/award?keyword=cambio+climatico+en+honduras+2020+pdf PDF link annotation
    • http://zifixoribe.scienceontheweb.net/quantitative_research_paper_format.pdfIn PDF document text
    • https://cdn.sqhk.co/zubejavaxuvu/diigrif/90806926811.pdfIn PDF document text
    • https://cdn.sqhk.co/sexobivobufo/ghjjjUd/aso_exam_pattern.pdfIn PDF document text
    • http://gapagal.mywebcommunity.org/adobe_after_effects_cc_shortcut_keys.pdfIn PDF document text
    • http://euroshopmn.space/961861560868wew1.pdfIn PDF document text
    • http://sportplays.ru/rozapiv4xs5w.pdfIn PDF document text
    • https://cdn.sqhk.co/zikegasenar/sHijcje/linear_parent_function_definition_math.pdfIn PDF document text
    • http://vomamafawib.scienceontheweb.net/authentic_happiness_free_download.pdfIn PDF document text
    • http://helplnstagramcontact6088756.com/fuzerixowurakudufisuwedxmvi0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tupudenijusab.rf.gd/10_breakthrough_technologies_2018.pdfIn PDF document text
    • http://dadinubu.rf.gd/kaxedutaxod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a47e2037-8c76-465d-9785-8cf20a8d247b/letra_de_cancion_ven_y_toma_el_trono.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb737b5b-f955-432c-bd71-ddaf11165983/sony_pxw-fs5_specs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9435280c-052a-420e-a554-2a102791133e/49350755489.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b238c92-ca8c-4b53-a326-004e1ac6d51d/dimar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76515aab-c1b2-45b0-8022-b55a5b9d8655/zuvivugifujelezila.pdfIn PDF document text
    • http://dejibokakar.onlinewebshop.net/ridixivijanalixowejoxow.pdfIn PDF document text
    • http://daxokefi.epizy.com/18212269323.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce3b8542-a5db-45bd-ad89-a30b315cfab8/13836186452.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_off0000f0de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0DE 5716 bytes
SHA-256: f9c5dbb6ec75b8f98b138fb556f297e3259c6babd7ebc8989c4a43145d64080a
font_01_sfnt_off00010411.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10411 11968 bytes
SHA-256: db29bf36b6d1435b01deff98996540ebb1135f93bbe796fc76824ecd9513d00c

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