Malicious PDF — malware analysis report

Static analysis result for SHA-256 85b12d242ae81a17…

MALICIOUS

PDF

90.0 KB Created: 2021-03-24 06:24:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 3aa67e82c1014ca6f8771937f4af413f SHA-1: 804c9f5bf2f401468658acd1c8524093cc62b5da SHA-256: 85b12d242ae81a179de3cda18845066d95499cb65ea78e6180e863de4c22eb21
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 0.9990

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://vilenefex.ru/123?utm_term=excision+movie+parents+guide PDF link annotation
    • https://cdn.sqhk.co/demexadol/iD6mNjg/hide_and_seek_movie_korean_2016.pdfIn PDF document text
    • http://legiontry.online/bank_of_america_merrill_lynch_corporate_card_pinuugiq.pdfIn PDF document text
    • https://lureriwoxefewu.weebly.com/uploads/1/3/4/5/134590368/8251416.pdfIn PDF document text
    • http://copyrightprivacy.site/27453442509cdlj7.pdfIn PDF document text
    • https://cdn.sqhk.co/nawamuzimosu/QhhggTc/vijinizananug.pdfIn PDF document text
    • https://zimovezinidukiv.weebly.com/uploads/1/3/1/4/131453924/risapovofo_sefurukisawab_temasugo.pdfIn PDF document text
    • https://cdn.sqhk.co/datolabevev/mLjbz0p/car_driving_school_simulator_download_pc_free.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373526/normal_604218d21032b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425256/normal_6019b3d930814.pdfIn PDF document text
    • http://pemutoguxo.66ghz.com/10564993204.pdfIn PDF document text
    • http://itayoga.space/directv_now_customer_service_billing6ihml.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459939/normal_602b0dcc18c9e.pdfIn PDF document text
    • https://gukabezifom.weebly.com/uploads/1/3/6/0/136051166/f40ff025e.pdfIn PDF document text
    • https://lipulutopokun.weebly.com/uploads/1/3/5/9/135964399/jinodi_movuneluwuw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459319/normal_601bd0cda6161.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454682/normal_601db0da47e50.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://s3.amazonaws.com/kavugusepe/what_was_life_like_in_europe_before_ww1.pdfIn PDF document text
    • http://vedezaduxi.epizy.com/28649575610.pdfIn PDF document text
    • https://s3.amazonaws.com/gixawetopoli/bloomberg_new_energy_finance_2019_report.pdfIn PDF document text
    • http://libejejizu.epizy.com/marazugefaxedujeribo.pdfIn PDF document text
    • https://s3.amazonaws.com/fatisake/14581045758.pdfIn PDF document text
    • https://s3.amazonaws.com/savukojubusum/sebugurujutixovelunigodon.pdfIn PDF document text
    • https://s3.amazonaws.com/lunojol/guide_to_buying_land_in_colorado.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_off000114c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114C7 5328 bytes
SHA-256: 9ca607f4dc512726fb0ddd27b79c10b2a745535a66c08154ef93d9b5314eb3cb
font_01_sfnt_off000126c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126C9 11248 bytes
SHA-256: b57693c961725b4dde558d826b8d57de9024e12527627bbddcf646bb6155e3ef
font_02_sfnt_off00014c51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14C51 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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