Malicious PDF — malware analysis report

Static analysis result for SHA-256 7305612958730513…

MALICIOUS

PDF

72.2 KB Created: 2021-03-07 12:54:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 298fd844339a4bb0fae7f501edccd71d SHA-1: 41a04cc3220eaac932c6dde77ceda17eef2f40eb SHA-256: 73056129587305133980897b232310c9a28d65d18c173d0cd117154d316b3407
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 0.9998

Heuristics 5

  • 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 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://jottigo.ru/strik?utm_term=how+to+do+sentence+structure PDF link annotation
    • http://powerpoint4you.ru/blended_retirement_system_jko_pretest_answers1zwej.pdfIn PDF document text
    • http://onsideball.info/sza_ctrl_download_full_albumzekk0.pdfIn PDF document text
    • http://interstart.online/vazefizagibupodukeo872u.pdfIn PDF document text
    • http://petrol-v-pol-price.site/enthalpy_of_ch4nmfa7.pdfIn PDF document text
    • http://delaem-sami.online/how_to_replace_samsung_dryer_heating_element_dv45h7000ew_a29cfb8.pdfIn PDF document text
    • http://digitaltoolsfor.xyz/money_cheat_for_android_games_without_root5xiv3.pdfIn PDF document text
    • http://trendmobile.ru/hartalika_teej_vrat_katha_book_onlinemrzvf.pdfIn PDF document text
    • http://theplafond.xyz/35567712896v07s6.pdfIn PDF document text
    • http://5gusevshop.space/viki_asian_tv_dramas_movies_apklo219.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tezude/ajaran_syiah_di_malaysia.pdfIn PDF document text
    • http://kinikodiraxo.rf.gd/mimejepinidutijefelu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ce6a636-1720-448f-a4c2-cf91b06a6db1/vubitakexijutesipogidur.pdfIn PDF document text
    • http://puwilibu.epizy.com/zuzuxu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3146be0a-6950-4ae9-b4f7-1b61dd94062e/the_heir_affair_amazon.pdfIn PDF document text
    • http://videwebik.epizy.com/how_to_get_voice_turn_by_turn_directions_on_google_maps.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c185531-0b7b-4510-a824-83a539c7b997/5727678701.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwenoxuzasila/greeting_letter_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ddcd417-ca12-475a-ba56-c21fe81e6e62/88813205792.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98346ad2-b4e9-462b-84be-8670ed3694ac/kitchenaid_artisan_5_qt_glass_bowl.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_off0000e076.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE076 4744 bytes
SHA-256: b969698a04307cd0a39f18d63866f62e4c7da929e43025d3d7e290cf1bdb9c65
font_01_sfnt_off0000f0b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0B9 10236 bytes
SHA-256: 48216724e041128ada661b58e8ef846eeb443012cad7796ec2bdc88b5326f1e3

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