Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee5f393c92286045…

MALICIOUS

PDF

74.9 KB Created: 2021-03-06 07:55:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 1abb94630bd411fbebdb71486d4066c3 SHA-1: 9ca765c6fb51dfad0754b4a79e976fac29a383eb SHA-256: ee5f393c922860451b04f409c1f5dc556cbae32b1ab28fe527d70270e87f371e
126 Risk Score

Malware Insights

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

The PDF file contains embedded URLs and is flagged as a link farm on disposable hosting, indicating a phishing or redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URIs point towards a common phishing lure to drive traffic to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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://seumenha.ru/wix?keyword=bmw+e46+m3+manual+transmission+for+sale PDF link annotation
    • http://allostar.buzz/kewekmweda.pdfIn PDF document text
    • http://krokoboko3.xyz/my_ishmael_review6bwxe.pdfIn PDF document text
    • http://216tilford.com/latufolazomihysu1.pdfIn PDF document text
    • http://myfoxing.online/who_are_all_the_female_marvel_characters8zpyi.pdfIn PDF document text
    • http://sale50.pro/piriformis_exercises_videoie15z.pdfIn PDF document text
    • http://razvivatel.blog/bilekurisuxiwalaxemoj2av0.pdfIn PDF document text
    • http://it50save.info/what_defines_a_dystopian_novelfk65q.pdfIn PDF document text
    • http://trixy-matrix.space/jojamunu7aa6.pdfIn PDF document text
    • http://conicppjry.bid/kerbal_space_program_xbox_one_controlspcwka.pdfIn PDF document text
    • http://babysampler.com/koxokofanigelojo7sbrb.pdfIn PDF document text
    • http://wixujikubipom.mygamesonline.org/why_is_my_computer_not_connecting_to_websites.pdfIn PDF document text
    • http://frankiearvelo.com/descargar_mma_fighting_clash_hackf24t0.pdfIn PDF document text
    • http://zabemaladameg.medianewsonline.com/21162064407.pdfIn PDF document text
    • http://naxajogilelog.medianewsonline.com/34124377520.pdfIn PDF document text
    • http://terem.space/que_es_la_conclusion_de_un_trabajo_escrito_ejemplo20vfw.pdfIn PDF document text
    • http://nemugub.mywebcommunity.org/meratimus.pdfIn PDF document text
    • http://todayit.pro/386232225140qbej.pdfIn PDF document text
    • http://idealslim-italiaoficial.site/principles_of_communication_systems_notes7pey7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dirulibas.onlinewebshop.net/how_to_change_a_kitchen_faucet_aerator.pdfIn PDF document text
    • http://mogorixonub.rf.gd/biotransformation_meaning_in_medical.pdfIn PDF document text
    • http://zisukuvi.atwebpages.com/jejijarit.pdfIn PDF document text
    • http://saxogif.epizy.com/47801226183.pdfIn PDF document text
    • http://tulajadulixo.myartsonline.com/what_is_a_facility_layout.pdfIn PDF document text
    • http://kugukokoner.myartsonline.com/how_long_does_it_take_to_cook_a_2.5_lb_roast_in_crock_pot.pdfIn PDF document text
    • http://ritumogadoj.onlinewebshop.net/wahl_clippers_at_walmart.pdfIn PDF document text
    • http://kinutumuzikuji.epizy.com/how_to_make_pizza_dough_recipe_without_yeast.pdfIn PDF document text
    • http://xojozefobulujox.epizy.com/will_verizon_iphone_work_with_straight_talk.pdfIn PDF document text
    • http://musototiwa.epizy.com/how_to_use_presonus_capture_3.pdfIn PDF document text
    • http://kosezofejesuxef.atwebpages.com/45691028756.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_off0000e4f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4F6 5460 bytes
SHA-256: 9168ec53ccf551f9a2c740aea55f810e167ae9a3dad60e31ff1f2ad8a29593de
font_01_sfnt_off0000f786.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF786 10624 bytes
SHA-256: a601b55e8f061c0cb80f96e3563c4ae5088e035e026b32cc0fa2f69715168adb