Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c04d2ad7097f6e7…

MALICIOUS

PDF

83.2 KB Created: 2021-04-02 09:26:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: bb700b2a367422515b38a194e3d651a3 SHA-1: f7426d0cf1287fd346791b18ed55be97a32ab146 SHA-256: 6c04d2ad7097f6e70ed0584196724caeef0f6a96d26530774fb811981148683e
206 Risk Score

Malware Insights

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

This PDF document impersonates a cloud document lure, aiming to trick the user into clicking on one of the numerous embedded links. The ML classifier and ClamAV detection strongly indicate malicious intent, with the document likely serving as a gateway to phishing or malware distribution sites. No scripts were extracted, but the high number of external links on disposable hosting suggests a link farm designed for SEO manipulation or to host malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

Heuristics 7

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • Cloud document impersonation lure medium SE_CLOUD_DOC_LURE
    Document impersonates a cloud file-sharing service such as SharePoint, OneDrive, Google Drive, Dropbox, Box, or Microsoft 365 and asks the user to open, verify, or access a shared document
  • 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://xezojetit.ru/award?keyword=pdf+xchange+editor+bookmark PDF link annotation
    • https://lafatizurekasat.weebly.com/uploads/1/3/4/7/134748402/peleripegadofegi.pdfIn PDF document text
    • https://josuriwomevopi.weebly.com/uploads/1/3/4/7/134769094/7d53ccfd6213e9a.pdfIn PDF document text
    • https://cdn.sqhk.co/tusufawenu/d9O6e8G/losewusunogizenup.pdfIn PDF document text
    • https://xelixexojiga.weebly.com/uploads/1/3/4/1/134108676/walija.pdfIn PDF document text
    • https://medivurufif.weebly.com/uploads/1/3/1/4/131407406/kogupijemeje-nipomawoja-sevisades.pdfIn PDF document text
    • https://walotowujiko.weebly.com/uploads/1/3/4/5/134582573/rusifogebubi-wakakizetiwem-bakanadesa-pufoso.pdfIn PDF document text
    • https://jejademi.weebly.com/uploads/1/3/4/2/134266227/benorutoge-pizuzowikowora-lujotapolo.pdfIn PDF document text
    • https://cdn.sqhk.co/kuwusemob/qCyRcJP/fdic_call_report_glossary.pdfIn PDF document text
    • https://cdn.sqhk.co/luwagoma/ihehvEQ/freeze_credit_card_in_ice.pdfIn PDF document text
    • https://wavikifetin.weebly.com/uploads/1/3/4/9/134901048/9243623.pdfIn PDF document text
    • https://cdn.sqhk.co/bilanogakiw/idsemdn/frases_tumblr_para_fotos_de_instagram_en_ingles.pdfIn PDF document text
    • https://fibavizenimi.weebly.com/uploads/1/3/4/4/134485548/vugur.pdfIn PDF document text
    • https://dixotusokor.weebly.com/uploads/1/3/0/9/130968976/zuzopaluvapedijure.pdfIn PDF document text
    • http://fodefon.getenjoyment.net/what_is_fire_baptism_in_the_bible.pdfIn PDF document text
    • http://dudoxanudito.scienceontheweb.net/allahabad_high_court_aro_paper_2020.pdfIn PDF document text
    • http://vazawujuzu.sportsontheweb.net/87569370909.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://f55c6975-0091-4942-a106-dc80285e5f9d.filesusr.com/ugd/8a4248_2c14f00ee8fa449e8d8aa93c501d19e3.pdf?index=trueIn PDF document text
    • http://newemepakirid.myartsonline.com/courage_to_be_disliked_espaol.pdfIn PDF document text
    • https://71e5fc8e-cc9a-4633-96c3-2c70acd464d0.filesusr.com/ugd/f08e01_865e573678d341f692ff2f6786a0c7f8.pdf?index=trueIn PDF document text
    • https://2e907eb7-0cdb-46e5-a4de-ff0e34d1b96e.filesusr.com/ugd/7ea2c5_9e58914d4cdf48fc98cb70049b19b9d3.pdf?index=trueIn PDF document text
    • https://ea64ff4c-51e6-4efc-8cc1-399682447901.filesusr.com/ugd/961f18_7082c9c5d3b84215bb0fc8d3da9c3126.pdf?index=trueIn PDF document text
    • https://bc260b4e-efc2-469d-9102-9c7234992d76.filesusr.com/ugd/b1b3ad_bdd0ed1fe77940f2b9c1ebdab34b446b.pdf?index=trueIn PDF document text
    • https://c78267de-509c-4cb0-9394-6b21b7876e04.filesusr.com/ugd/290ce3_9f4ce9e7b9d84353a78e4d8bb5a8f43c.pdf?index=trueIn PDF document text
    • https://d78d2789-9aef-4bfd-88be-9093bec910ef.filesusr.com/ugd/87a178_98b80ece0f6d49788e29ae52be481004.pdf?index=trueIn PDF document text
    • https://67dec473-0a9c-497c-80b1-62a4c84c5046.filesusr.com/ugd/0aab01_b9ec40e0d4834a078e3c235424166a62.pdf?index=trueIn PDF document text
    • https://cb6d8354-940b-4e05-9f1d-0150973ab277.filesusr.com/ugd/882da0_79220ea515f542da912fd54bb712302a.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010645.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10645 5496 bytes
SHA-256: 2f104dc8be0c9202434606d96b38ab8e1103a455eb5dc901a8033257acd52f46
font_01_sfnt_off000118df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118DF 11204 bytes
SHA-256: d97b3428a80d390e0366406bfa055e850f48ec2fda4f3b7fa663d539f926b077