Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e3f06d020c29a5e…

MALICIOUS

PDF

76.5 KB Created: 2021-03-23 08:01:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: cb1364c6938c69f8c5b593561775fbbf SHA-1: 9c897a7d839d90bdf68d6dbea063fdea4c990123 SHA-256: 7e3f06d020c29a5e946686acb5cacdfa47c66884de926370fd8b63acc9307795
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 0.9997

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://druttle.ru/strik?utm_term=how+do+i+get+my+keurig+to+brew PDF link annotation
    • http://instahelpforbusiness.com/my_grandmothers_house_by_kamala_das_questions_and_answersnvzq3.pdfIn PDF document text
    • http://portkamesto.site/chords_and_lyrics_the_wanderer_dion1cgzm.pdfIn PDF document text
    • http://esplus.pro/abnormal_psychology_dsm_5_update_edition_8th_download65ctq.pdfIn PDF document text
    • http://tixshopclub.fun/what_weapon_did_perseus_use_to_kill_medusa9eznt.pdfIn PDF document text
    • https://cdn.sqhk.co/xedomobedusi/a7jcz2p/clueless_halloween_costume_diy.pdfIn PDF document text
    • http://zabovawupe.mypressonline.com/why_isnt_my_hp_printer_not_printing_color.pdfIn PDF document text
    • http://lnstagram-verificationbadgeform.com/employees_credit_union_internet_banking8nwet.pdfIn PDF document text
    • http://opensol.xyz/49457703415gfw2w.pdfIn PDF document text
    • http://gadetebes.sportsontheweb.net/4606019761.pdfIn PDF document text
    • https://cdn.sqhk.co/kisasizaro/cihJ3jf/logan_bookshelf_pottery_barn.pdfIn PDF document text
    • http://milanbeach.fun/how_to_update_ti_84_graphing_calculator8hhgb.pdfIn PDF document text
    • http://miraluvofizobe.medianewsonline.com/87706167307.pdfIn PDF document text
    • http://lurubalopare.sportsontheweb.net/85712219222.pdfIn PDF document text
    • http://avtoshkola-region26.ru/reburixobolijolodozevcwei9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gavofime.atwebpages.com/33358659913.pdfIn PDF document text
    • http://zogadawedalifap.onlinewebshop.net/lazowon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b4ea7ea-5b91-4f09-9984-ab634400aa73/html_label_text_alignment.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8bb8375-85ea-4251-aa5e-9f8fe7eebab1/jufasuzopofewelipogaruf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67a3ad19-86c7-454b-8be0-73cbf09e1549/16796156475.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51425c72-4115-4fa7-aa7d-ff5cdb408e00/basic_electronics_course_syllabus.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_off0000ee22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE22 5084 bytes
SHA-256: 3e6b81d720f9c6b5099b70ebbe1fd4a6f5ead5b8930701e18dd5df0c164013bf
font_01_sfnt_off0000ff73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF73 10924 bytes
SHA-256: 8ec88f68d5791186ebf3250d6080cf59c5abdb821c40a9c8570fd70ffc2123ae

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