Malicious PDF — malware analysis report

Static analysis result for SHA-256 b41a056812913a66…

MALICIOUS

PDF

69.6 KB Created: 2021-02-14 13:05:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: a5d0df17bb714336205bd036ad16a340 SHA-1: 1b8f6b293da8aa20f26fe4e5df3a30e6c4059ad4 SHA-256: b41a056812913a66a494a2302c9602562039958c7cf81151bacb72374b507000
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://leonvi.ru/wix?keyword=wapo+death+notices+reddit PDF link annotation
    • https://rezisepadas.weebly.com/uploads/1/3/4/2/134235668/xodanenobikatok.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420438/normal_6017d92a168c5.pdfIn PDF document text
    • http://detolenikalopaj.iblogger.org/75866852888.pdfIn PDF document text
    • http://silokegawup.iblogger.org/audio_technica_ath-_cks5tw_manual.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449004/normal_600f759891546.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369930/normal_601ba87d66f09.pdfIn PDF document text
    • http://reduslimer.website/surya_the_brave_soldier_movie_filmywap6jxpk.pdfIn PDF document text
    • https://bemebedutor.weebly.com/uploads/1/3/4/6/134624352/vugiselaraxisi-bomadinodorusek.pdfIn PDF document text
    • http://cardioactiveuficiale.site/musulajewejagakusdzfq7.pdfIn PDF document text
    • http://lakulikelanu.iblogger.org/xijipejaxerud.pdfIn PDF document text
    • http://meine-gebuhrenfrei.com/star_wars_main_theme_piano_sheet_music_freeoglq2.pdfIn PDF document text
    • https://zebonusifok.weebly.com/uploads/1/3/4/5/134509505/06988b0a0ff3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468259/normal_5fd0bc8f57b34.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://puxejinasor.epizy.com/faceing_math_lesson_2_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/safenalavojuwu/canadian_political_platform_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/xoxaneral/32869834069.pdfIn PDF document text
    • https://s3.amazonaws.com/libeganot/18767115596.pdfIn PDF document text
    • http://zejenideve.rf.gd/oecd_vietnam_report.pdfIn PDF document text
    • http://logururud.epizy.com/reporters_died_in_afghanistan.pdfIn PDF document text
    • http://zonidagaxa.epizy.com/wagner_paint_sprayer_parts_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/fukezavazuj/38547526663.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_off0000d39e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD39E 5140 bytes
SHA-256: 64be16dc5c297983767cebcd807600aa2da5b2d72771c96f292bf7fa6e395a29
font_01_sfnt_off0000e520.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE520 10656 bytes
SHA-256: e76305b33e21555020437acb80e0530d11920f21e8b77ffb033b8cb25a989b21

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