Malicious PDF — malware analysis report

Static analysis result for SHA-256 cee5b758117a2395…

MALICIOUS

PDF

82.2 KB Created: 2021-05-13 01:40:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 290cfa931b7428c9abaa0d0bac15f961 SHA-1: 14e30c516aeaf09262249190765609aba86a6337 SHA-256: cee5b758117a2395a4cdbd75345b5460f3523bc176219797b48275e5870ffc83
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9998

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
  • 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://jottigo.ru/strik?utm_term=does+motorola+moto+g+3rd+gen+support+4g PDF link annotation
    • http://myyshooop227.site/scaffold_handover_certificate_template_ukc0sb0.pdfIn PDF document text
    • https://cdn.sqhk.co/fikalibumi/gjk3Nhf/zofuzewedeboli.pdfIn PDF document text
    • https://cdn.sqhk.co/tajudozizif/cboxHmT/no_button_vape_pen.pdfIn PDF document text
    • https://cdn.sqhk.co/sosexazefip/C4iihjr/idle_evil_clicker_mod_apk_android_1.pdfIn PDF document text
    • http://morikulifitoj.22web.org/binary_bot_script_free.pdfIn PDF document text
    • http://save50it.info/how_to_install_john_the_ripper_jumbo_on_ubuntu3nno6.pdfIn PDF document text
    • https://cdn.sqhk.co/kuzefoke/d86Orhj/tiwewubalula.pdfIn PDF document text
    • http://ig-support-service.com/fusukisedibozvuo9y.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://b064d0e4-88d6-4b7e-8087-8ebf790fcba6.filesusr.com/ugd/ca32a8_ac3e25e37adc4619853fc6cc3094a01f.pdf?index=trueIn PDF document text
    • https://c301b42c-deab-4116-afcd-a09dd0728425.filesusr.com/ugd/4bb894_4720516eafce4233baac9f166341ac5d.pdf?index=trueIn PDF document text
    • https://711920be-b761-4f0e-a604-762b26663b16.filesusr.com/ugd/ffcbea_caa565975816470ab961d889a9f0a85f.pdf?index=trueIn PDF document text
    • http://doborokozudu.epizy.com/10633649966.pdfIn PDF document text
    • http://jesegusanasukan.epizy.com/wusoragusojos.pdfIn PDF document text
    • http://xadiromawa.epizy.com/biografia_de_monseor_oscar_arnulfo_romero.pdfIn PDF document text
    • https://s3.amazonaws.com/najipavez/99763603551.pdfIn PDF document text
    • https://s3.amazonaws.com/tudawufed/84845776558.pdfIn PDF document text
    • http://kefugobewuma.rf.gd/arrays_and_pointers_c.pdfIn PDF document text
    • https://s3.amazonaws.com/jeromisixinolib/soluciones_molaridad_ejercicios_resueltos.pdfIn PDF document text
    • http://pegatudewisa.rf.gd/dobagazodivozekabuxuf.pdfIn PDF document text
    • https://04a9e765-cf69-4035-9b9a-998d8fb4e692.filesusr.com/ugd/8c5016_e1f8fb8afac4408d9e412881c111daf9.pdf?index=trueIn 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001016b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1016B 5532 bytes
SHA-256: 9458aa7c316b44ae2dc98fb9057d6d51a5aedf8def26abe6f22ceb91f1599ade
font_01_sfnt_off00011431.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11431 11624 bytes
SHA-256: accf3e8b6841514e2b6828d9a42e519232653a06ba934df0deec9ae6e698205d

Open this report in the interactive analyzer, or submit your own file for analysis.