Malicious PDF — malware analysis report

Static analysis result for SHA-256 91674ab0366fad49…

MALICIOUS

PDF

74.3 KB Created: 2021-02-25 04:27:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 9ed20218bdc9ea52cda44ffba52ffc45 SHA-1: 193b0de99b6db0f2c45b5cba51b5ee6514e707a2 SHA-256: 91674ab0366fad4975a7115ef9de4cc8817e9da0915f441d0b0712d55586905d
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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/award?keyword=what+is+f21+error+on+kenmore+washer In PDF document text
    • https://cdn.sqhk.co/xevowuto/eahKx5i/27431880924.pdfIn PDF document text
    • https://cdn.sqhk.co/wibezudak/ctIieib/72809256862.pdfIn PDF document text
    • http://fukuzowi.sportsontheweb.net/what_is_the_plot_summary_of_alice_in_wonderland.pdfIn PDF document text
    • http://mowefopovog.mywebcommunity.org/debotofibusibe.pdfIn PDF document text
    • https://cdn.sqhk.co/vixonafom/hNitXhf/fafofuzibe.pdfIn PDF document text
    • https://cdn.sqhk.co/detazido/itheggh/real_gangster_miami_crime_game_2018_mod_apk.pdfIn PDF document text
    • http://famozosivupiwij.sportsontheweb.net/41511632551.pdfIn PDF document text
    • http://tigexesuni.22web.org/positive_effects_of_globalization_on_culture.pdfIn PDF document text
    • https://cdn.sqhk.co/potasuregoz/GIpkicw/bebogevifodilatiwod.pdfIn PDF document text
    • https://cdn.sqhk.co/pinofizulag/iilghJ1/move_the_box_level_21.pdfIn PDF document text
    • https://cdn.sqhk.co/noluxokeruma/iieREjf/rhythm_teacher_pro_apk.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/gapivegek/balance_charger_v6ac_manual.pdfIn PDF document text
    • http://zudupaxub.myartsonline.com/lizutupuvekobut.pdfIn PDF document text
    • https://s3.amazonaws.com/nolarifaforuxop/peruwopabe.pdfIn PDF document text
    • http://samugino.epizy.com/is_house_rent_exempted_from_income_tax.pdfIn PDF document text
    • http://jeborawaleko.atwebpages.com/holden_evening_prayer.pdfIn PDF document text
    • http://pidawuz.epizy.com/free_whatsapp_messenger_new_version.pdfIn PDF document text
    • http://mebebuxepok.rf.gd/69961905746.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_off0000e534.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE534 5328 bytes
SHA-256: ffa109cafa9892f21a8c603b065a8c39804717126f2d470319cf277d6201d3c5
font_01_sfnt_off0000f741.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF741 10688 bytes
SHA-256: 5113a049385f33d38442a84d799d5f7a287d285c8e9d3236cedc4406c7cf448f