Malicious PDF — malware analysis report

Static analysis result for SHA-256 467812f0d5bce1e5…

MALICIOUS

PDF

80.3 KB Created: 2021-06-05 09:33:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 167dd38db27ee1a4b07f6f4a1d512ae5 SHA-1: def76a5d58b4d1ef6253ccff669668928b8a5ff6 SHA-256: 467812f0d5bce1e528c4dac14c6de4ae4733aa8c8416881e47fb649a00adb812
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. It uses brand-impersonation credential phishing. 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 0.9993

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
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://jipukikibowema.weebly.com/uploads/1/3/4/6/134633032/zokogiv_jeberopa_woladorip_raken.pdf.
  • 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://inwebjor.ru/pbw?utm_term=edd+identity+verification+reddit+2021 PDF link annotation
    • https://jipukikibowema.weebly.com/uploads/1/3/4/6/134633032/zokogiv_jeberopa_woladorip_raken.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411220/normal_5ff518b2a6304.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416918/normal_5fddc2079a99c.pdfIn PDF document text
    • https://fekanefitogi.weebly.com/uploads/1/3/4/3/134340372/dabigufeta_bokavelipeju_fovegumesaj.pdfIn PDF document text
    • https://xigizimevavas.weebly.com/uploads/1/3/5/9/135982966/lokajoxu.pdfIn PDF document text
    • https://guxofoxevi.weebly.com/uploads/1/3/4/7/134737998/1084490.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456399/normal_5fe5b4e219149.pdfIn PDF document text
    • https://jibowosiz.weebly.com/uploads/1/3/4/6/134632869/47a5ee9.pdfIn PDF document text
    • https://lemoxubasox.weebly.com/uploads/1/3/4/3/134329143/sarajolelinuvifoku.pdfIn PDF document text
    • https://gewupokisata.weebly.com/uploads/1/3/4/6/134606569/4773503.pdfIn PDF document text
    • https://xutepodufolesik.weebly.com/uploads/1/3/0/7/130739265/9da0a208fcc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380692/normal_60176cfbd0aaa.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4480744/normal_60b6485fb9e99.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zewalar.pbworks.com/f/caterpillar_dealer_service_tool_catalog_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d403504-e1b9-45de-8e3c-a9da7c38e7b6/les_prophties_de_nostradamus_texte_complet.pdfIn PDF document text
    • http://kunozulig.pbworks.com/f/geliim_psikolojisi_soru_bankas_benim_hocam.pdfIn PDF document text
    • http://javefanudosa.pbworks.com/f/what_do_henna_tattoos_symbolize.pdfIn PDF document text
    • http://fuvuxagola.pbworks.com/f/what_are_the_12_zodiac_signs_for_each_month.pdfIn PDF document text
    • http://tujelupirobe.pbworks.com/f/33929516806.pdfIn PDF document text
    • http://lekuzax.pbworks.com/f/maine_pyaar_kyun_kiya_mp3_download_pagalworld.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/642de97e-d14a-4430-bd1e-3fa5662e9bc9/hotels_near_me_cheap_prices_today.pdfIn PDF document text
    • http://nafidob.pbworks.com/w/file/fetch/144639444/zuvutavogas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28dc6213-f4fc-47db-ad30-b400f53891b9/islamic_names_meaning_in_urdu_book_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0fff37fb-391c-4f02-966b-a2647b710482/are_manual_scales_accurate.pdfIn PDF document text
    • http://jajafad.pbworks.com/w/file/fetch/144427971/diary_of_a_wimpy_kid_the_last_straw_pages.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_off0000fa34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA34 5252 bytes
SHA-256: 38e0326409922cfe78638e81c062fa8ce896db438ff61ab4c57df8cbf2d123a1
font_01_sfnt_off00010c33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C33 11788 bytes
SHA-256: c819c097fb754414d8425965f7eae2e8a419294dc2e81d51d4237709d8a6f1d0