Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c056f8eddc03cc7…

MALICIOUS

PDF

76.8 KB Created: 2021-03-21 06:30:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 54c201a3e32f6a455a442c94601b850e SHA-1: 47399ce9926bef6a339b583ffc74340ed5ab00ad SHA-256: 0c056f8eddc03cc794d62221ce4195630e19b5ba12aff1cab941084f297dd616
134 Risk Score
Tags
free-cdn-ebook-manual-lure

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. The file embeds a large number of external links characteristic of an SEO link farm and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://maypoin.ru/award?keyword=smok+nord+instruction+manual+pdf PDF link annotation
    • http://sidagopuxi.22web.org/96415908202.pdfIn PDF document text
    • http://nofipozi.22web.org/diwijenomeduf.pdfIn PDF document text
    • http://nexipufogavajid.getenjoyment.net/el_alquimista_de_paulo_coelho_descargar.pdfIn PDF document text
    • http://velibabup.iblogger.org/95141607585.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447252/normal_5fe2cdfa5c2da.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421614/normal_6004b090d3fb1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486982/normal_60503fe78d87c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e03e121-2cd0-410f-b849-1050486ce89b/why_was_firefly_cancelled.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/feca2f0c-fb94-493d-b3ab-abe96def4730/how_do_i_check_my_starbucks_gift_card_balance_without_an_account.pdfIn PDF document text
    • http://mujunuge.rf.gd/csir_net_2019_answer_key.pdfIn PDF document text
    • http://wukafomiweseb.epizy.com/low_back_pain_exercise_guide.pdfIn PDF document text
    • http://dasabenanej.epizy.com/19435830007.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5679c745-c03e-4fd1-ba02-47d104f6edb0/lose_yourself_eminem_songtext_deutsch.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/15d83c10-a856-4ea5-9a4c-21937346678b/mechanical_drawing_software_for_mac.pdfIn PDF document text
    • http://muzoxed.rf.gd/peter_pan_disney_book.pdfIn PDF document text
    • http://kikumofesokir.rf.gd/dufamujapizel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d84497b4-959a-4088-8831-8368913f92bb/39826069041.pdfIn PDF document text
    • http://bifovigavij.myartsonline.com/all_the_stars_are_coming_out_tonight_for_you_lyrics.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8c8e310-25ed-4220-af5e-cc0f6b88e2c5/77678610366.pdfIn PDF document text
    • http://namepafubi.atwebpages.com/how_to_connect_microsoft_sculpt_comfort_keyboard.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

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_off0000eecb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEECB 5468 bytes
SHA-256: 8d3ab90df27ce9095d2708ae6129f390808b63b29a17cac2c19ccbe120dbb438
font_01_sfnt_off00010152.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10152 10784 bytes
SHA-256: 932e7a6a40d0d4d31633a7e4acb49c95355307c0b25ada93060aac6216339684

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