Malicious PDF — malware analysis report

Static analysis result for SHA-256 32aeec3dc07c6d3f…

MALICIOUS

PDF

76.2 KB Created: 2021-03-06 08:03:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: eed53597cb10077369f179e44fb573d3 SHA-1: 5b61559e327fdf91e63114502559232de751db0c SHA-256: 32aeec3dc07c6d3ffd836fdd03a4c9aa0bedda8295315550054f799048c2800c
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://crophysi.ru/wix?keyword=forensic+science+midterm+study+guide In PDF document text
    • http://dalifajebuxog.scienceontheweb.net/ic-706mkiig_mars_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/zatufora/jcjeKDb/gofopod.pdfIn PDF document text
    • https://cdn.sqhk.co/ledivure/ihagi5r/my_lips_are_always_chapped_even_with_chapstick.pdfIn PDF document text
    • http://zokugorevat.mywebcommunity.org/trn_c_tho.pdfIn PDF document text
    • http://lozebakumod.22web.org/five_nights_at_freddys_2_unblocked_games_77.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/zalisujezajaje/super_fancy_pants_adventure_mod_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/fajeloninesitel/sanidem.pdfIn PDF document text
    • https://920f4c01-5fd6-4c40-8b27-b99972fecb60.filesusr.com/ugd/d63aaf_1657797e9f8d4b23ada82c8a7429c7e0.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/daraniwekamidir/bloomington_hollywood_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/vatosolikijike/rujagajelelenibegoxo.pdfIn PDF document text
    • https://s3.amazonaws.com/sorapobuk/mukujemoxajexizuxinofitef.pdfIn PDF document text
    • https://3c199e1c-ff83-4553-a351-db1e9419129c.filesusr.com/ugd/424a74_e4f5791d493144d99c8566ca02bf4263.pdf?index=trueIn PDF document text
    • http://bataxob.rf.gd/gewiku.pdfIn PDF document text
    • http://xojesulelu.rf.gd/fovagofagufiforisozowitog.pdfIn PDF document text
    • https://d115d978-d96a-40c8-9764-5d959708fc35.filesusr.com/ugd/436160_e0dd353217134872a2eede80909df728.pdf?index=trueIn PDF document text
    • http://wuwinot.rf.gd/centurylink_dsl_speed.pdfIn PDF document text
    • https://s3.amazonaws.com/polexebuj/58958727479.pdfIn PDF document text
    • https://2a085669-a8dc-40eb-b1d3-71ea9d660f60.filesusr.com/ugd/cafc24_a87d58c4a10d4cb28506678cab9adced.pdf?index=trueIn 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_off0000ee7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE7D 5072 bytes
SHA-256: 8a485393e37019b52836f8f7618961b32e955be43943c66708b96fba75649ca4
font_01_sfnt_off0000ffb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFB6 11000 bytes
SHA-256: 5b6d9fe034bc98bd9375c3b9840268a471cce8da778cd1e3483bbe20d1ae83cd