Malicious PDF — malware analysis report

Static analysis result for SHA-256 c585b087544f5c72…

MALICIOUS

PDF

90.3 KB Created: 2021-04-04 13:12:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 63b71b121dc369f0a978e296afbfdfbb SHA-1: d47e36cbb0eb025d37a4dfc2afedfedce37b0717 SHA-256: c585b087544f5c72e38bc2071bce176e03cfc78706fcc90ebfeec9c2df187972
226 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1190 Exploit Public-Facing Application

This PDF document is classified as malicious and exhibits characteristics of a phishing lure, specifically designed to harvest multi-factor authentication (MFA) or one-time codes. The extensive list of external links, many pointing to disposable hosting, suggests an attempt to distribute malicious content or redirect users to phishing pages. The ML classifier and ClamAV detection further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 7

  • 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.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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://golowaki.ru/strik?utm_term=fisher+price+rainforest+swing+power+cord PDF link annotation
    • http://tifusavegapawuf.mygamesonline.org/what_does_the_clean_light_mean_on_my_mr_coffee.pdfIn PDF document text
    • http://parralax.net/the_masque_of_the_red_death_quotes_about_the_rooms4qcim.pdfIn PDF document text
    • https://jibozugapizame.weebly.com/uploads/1/3/0/7/130775201/9120ae.pdfIn PDF document text
    • https://muwikilakejo.weebly.com/uploads/1/3/4/5/134519857/mudizilozedovamav.pdfIn PDF document text
    • https://zigudufojivop.weebly.com/uploads/1/3/4/7/134718002/394967.pdfIn PDF document text
    • http://bellissimo.online/how_to_tell_when_magic_mouse_2_is_fully_chargedtc2uz.pdfIn PDF document text
    • https://lizakefamejoxen.weebly.com/uploads/1/3/1/3/131384135/xixefefenojet.pdfIn PDF document text
    • https://juderesovabivov.weebly.com/uploads/1/3/4/6/134680251/desebezo_xuvuperenovutab.pdfIn PDF document text
    • http://umkatrade.ru/what_are_the_four_factors_that_affect_carrying_capacitypb3tx.pdfIn PDF document text
    • https://dejoputaxili.weebly.com/uploads/1/3/4/7/134763817/kidupu.pdfIn PDF document text
    • https://wagimudo.weebly.com/uploads/1/3/4/4/134475497/simotuma-fesifes-goniloxago-xeximoseb.pdfIn PDF document text
    • http://pejelurim.getenjoyment.net/pdf_split_offline_tool.pdfIn PDF document text
    • https://videxopejevis.weebly.com/uploads/1/3/5/3/135333638/870640.pdfIn PDF document text
    • http://brosbass.com/peaceful_warrior_movie_download_720pesizm.pdfIn PDF document text
    • https://romarifekaxa.weebly.com/uploads/1/3/2/6/132683260/9725938.pdfIn PDF document text
    • https://wuwonerosetopux.weebly.com/uploads/1/3/1/6/131606808/zekufasuwojizoxudes.pdfIn PDF document text
    • http://migriruy.ru/98964700701wt12b.pdfIn PDF document text
    • https://zejewovelopitut.weebly.com/uploads/1/3/0/8/130813539/6069f9d16dcb.pdfIn PDF document text
    • http://nituzovido.getenjoyment.net/simple_past_tense_exercise.pdfIn PDF document text
    • http://erogancolumbia.site/logenotesegexum8bdyl.pdfIn PDF document text
    • http://pusewuvi.medianewsonline.com/71838576475.pdfIn PDF document text
    • http://hamsterbig.com/how_to_cook_boiled_eggs_in_a_pressure_cookersjq8h.pdfIn PDF document text
    • http://igonlinesupport.com/andragogy_versus_pedagogyezn5y.pdfIn PDF document text
    • http://openchambre.xyz/813116128159k2a.pdfIn PDF document text
    • http://probmake12.xyz/how_to_know_if_it_is_a_pimple_or_cysticu1o2g.pdfIn PDF document text
    • https://dixetomik.weebly.com/uploads/1/3/4/7/134775969/lijupazibafar.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://suwuriru.onlinewebshop.net/axpertsoft_booklet_creator_crack.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000112fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112FA 3120 bytes
SHA-256: c733e68e05cf85886190155dcb4d77822b539741083f72402aa3a773dc8c1906
font_01_sfnt_off00011e31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E31 5432 bytes
SHA-256: 6098bc92b9f6958f69cfbc94c31b4e5d9728200cf3f02dc01a2fb6673def4297
font_02_sfnt_off000130be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x130BE 12572 bytes
SHA-256: beaa3574bb2aaa744cd6e662f2d2f931346a74d4875eec94abb0090e2963271f