Malicious PDF — malware analysis report

Static analysis result for SHA-256 057b65910be9f932…

MALICIOUS

PDF

77.6 KB Created: 2021-03-10 00:56:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: f27918f9818b52ae21b8e89cf5fa81a6 SHA-1: 968527cec77a0d5aef905f16aa78f40b0eb6a451 SHA-256: 057b65910be9f932dcdc6c537151459da2633a79150792432cfdcf2060fd8890
186 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

Heuristics 6

  • 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 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.
  • 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://mezovuduw.ru/123?utm_term=beiimaan+love+song PDF link annotation
    • https://nudabixe.weebly.com/uploads/1/3/4/5/134505388/e975b28.pdfIn PDF document text
    • http://ketenimolupev.sportsontheweb.net/general_zoology.pdfIn PDF document text
    • http://extrameets.fun/63445733059ijchc.pdfIn PDF document text
    • https://pimakesoxokozo.weebly.com/uploads/1/3/4/0/134041299/6750059.pdfIn PDF document text
    • https://furureseseruwa.weebly.com/uploads/1/3/4/4/134481841/943635c33.pdfIn PDF document text
    • https://fotiterik.weebly.com/uploads/1/3/5/3/135328456/6633992.pdfIn PDF document text
    • http://birebap.scienceontheweb.net/nikon_d5100_battery_charger_near_me.pdfIn PDF document text
    • https://liletalezawo.weebly.com/uploads/1/3/4/5/134591830/gojivoxasuv.pdfIn PDF document text
    • https://gozuneputir.weebly.com/uploads/1/3/4/3/134345179/jogosakivebuta.pdfIn PDF document text
    • https://mitesevutij.weebly.com/uploads/1/3/4/7/134717039/2561940.pdfIn PDF document text
    • https://powifamule.weebly.com/uploads/1/3/4/7/134757347/edbc2f628c.pdfIn PDF document text
    • http://vehicleusains.com/drinkwell_platinum_replacement_parts2996p.pdfIn PDF document text
    • https://mesifadenox.weebly.com/uploads/1/3/4/1/134108947/zigipupironakoz.pdfIn PDF document text
    • https://punelita.weebly.com/uploads/1/3/4/6/134679726/linawekugoj.pdfIn PDF document text
    • https://tajagarajoj.weebly.com/uploads/1/3/0/7/130776182/lepumi.pdfIn PDF document text
    • https://tizonitiwu.weebly.com/uploads/1/3/4/7/134734793/tedak_tofir_tasasenogopumul.pdfIn PDF document text
    • https://rilawexiretik.weebly.com/uploads/1/3/4/2/134267086/9085822.pdfIn PDF document text
    • https://webunufilijamo.weebly.com/uploads/1/3/4/6/134677486/1ca88a.pdfIn PDF document text
    • http://jaxagogilexet.sportsontheweb.net/hard_american_history_trivia_questions_and_answers.pdfIn PDF document text
    • https://disovipogazita.weebly.com/uploads/1/3/1/3/131398104/2160761.pdfIn PDF document text
    • http://gijipodotetojo.22web.org/the_hunger_games_mockingjay_part_1_movie_download_in_hindi_720p.pdfIn PDF document text
    • http://cheapkeys.site/25803740011609rh.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vewitemagim.rf.gd/resident_evil_4_apk_english_language.pdfIn PDF document text
    • http://lulufakek.epizy.com/baldurs_gate_dark_alliance_ii_pc.pdfIn PDF document text
    • http://satuzolo.epizy.com/android_auto_not_working_with_s10_plus.pdfIn PDF document text
    • http://bogazukutij.rf.gd/mentalist_season_2_subtitles_english.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_off0000f2dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2DC 5020 bytes
SHA-256: 5d4de942a1c9f8574d413e262a7fe25d097b537b0d4ce2ecbde60c2c3ee1cf83
font_01_sfnt_off000103e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103E3 10936 bytes
SHA-256: f4b47e29a65baa16516aaec5b31f777171be26639dabd016497d9d8911ee7d2e