Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee2cb4893bd145a1…

MALICIOUS

PDF

86.0 KB Created: 2021-03-10 08:53:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 9be7fff131243832b393a5d4120012b4 SHA-1: 2944b805f403407aaa48b605db481cf0944303bc SHA-256: ee2cb4893bd145a1f4c8edc501bcbab6a185a6b346e5095aeb8ee53a481364c8
126 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://midufefew.ru/123?utm_term=minority+report+quotes+about+technology PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4408335/normal_6020af44b954c.pdfIn PDF document text
    • https://lirefabagobaxi.weebly.com/uploads/1/3/4/0/134012393/wovanifopi.pdfIn PDF document text
    • https://rugovisatef.weebly.com/uploads/1/3/2/6/132682701/beritibanaguxukuze.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420019/normal_5fe5fb6219ec0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483103/normal_60160af8cac16.pdfIn PDF document text
    • https://zebepinexorusog.weebly.com/uploads/1/3/2/6/132695607/2110810.pdfIn PDF document text
    • https://gerogebu.weebly.com/uploads/1/3/1/6/131637886/66a8fa55.pdfIn PDF document text
    • http://tatanip.medianewsonline.com/muvewomiguwor.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/c426b14a-75dc-4aa9-9209-09f854494c10/porter_cable_pancake_compressor_regulator_repair_kit.pdfIn PDF document text
    • http://jifisuxevizek.myartsonline.com/vanetewuneriboxa.pdfIn PDF document text
    • http://laguwirir.epizy.com/bound_by_flame_demon_form.pdfIn PDF document text
    • http://rotufixijisadi.onlinewebshop.net/2009_honda_civic_maintenance_code_a13.pdfIn PDF document text
    • http://xobebol.onlinewebshop.net/berlin_welcome_card_discounts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/025eb72b-8d1b-40e2-b3bd-1d0b234742c1/target_baby_gate_extension_pins.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00ab794d-f7d0-45b0-9b21-284d0e7c2eba/dbt_mindfulness_worksheets.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/343df4fe-70c5-4b06-8c85-eb24b017048e/63812569228.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07894f08-38c9-40bb-a4e3-53cb74a54412/26412600792.pdfIn PDF document text
    • http://vopevufiwi.epizy.com/colored_acetate_sheets_philippines.pdfIn PDF document text
    • http://bumerezuwo.epizy.com/mabevipijumame.pdfIn PDF document text
    • http://navibizo.rf.gd/gawul.pdfIn PDF document text
    • http://kazowaz.rf.gd/10614824382.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_off000104f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104F0 5452 bytes
SHA-256: 726aa54eba10c54d59f369a2852a7008e7394f5c06a2fcdabc60e4ae10923bab
font_01_sfnt_off00011772.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11772 10732 bytes
SHA-256: 1523c1cf45b2df49e5d26f9daa16f8926ff082e4154223b882928b681ba7a236
font_02_sfnt_off00013c33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C33 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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