Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0986ca42d904d1e…

MALICIOUS

PDF

76.5 KB Created: 2021-04-03 22:22:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: df22fdaecf8fbadc904e26949f4a7a31 SHA-1: 03c2cc5ed418de567983a127a15f5b65d4cea489 SHA-256: f0986ca42d904d1e1386958945947ba97cb50edb89a353e1fbabae44c2c272cb
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by multiple heuristics, including ML and ClamAV, as malicious and phishing-related. The 'PDF_SEO_UTM_REDIRECTOR_LINK' heuristic indicates the presence of an image lure pointing to an SEO redirector, specifically 'https://jottigo.ru/strik?utm_term=is+it+legal+to+listen+to+music+while+riding+a+motorcycle+uk'. This suggests the document's primary purpose is to trick users into visiting a malicious website, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=is+it+legal+to+listen+to+music+while+riding+a+motorcycle+uk PDF link annotation
    • http://everydays.space/62494341130xdmlw.pdfIn PDF document text
    • https://cdn.sqhk.co/letopoto/jFRicvN/battle_royale_apashe_song.pdfIn PDF document text
    • http://smartycredit.info/58200688101rne7y.pdfIn PDF document text
    • https://cdn.sqhk.co/nukunudakiju/P8wOibX/vomoroxisisorenomaji.pdfIn PDF document text
    • http://topcabinets.xyz/ff7_strategy_guide_booksfs79.pdfIn PDF document text
    • https://cdn.sqhk.co/kuwusetoteji/ghftge3/bivoranelawuzusunesizukeg.pdfIn PDF document text
    • https://cdn.sqhk.co/bevizewo/higgEgc/fidget_spinner_phone_amazon.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/nokiva/sat_practice_khan_academy_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2ae4eef-cb35-499d-9fa5-6e4fe0090bc3/fikujizitaxigav.pdfIn PDF document text
    • https://s3.amazonaws.com/robumuduluwise/how_to_use_the_bike_at_planet_fitness.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd66fa17-38fe-4ccf-a81f-c4f68e96a80d/journey_to_the_west_full_movie_in_hindi_dubbed_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8649414a-39d2-4907-8496-f85074572fe9/95454699187.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/15a08d73-b3aa-4d4c-8b33-f3d23914ec50/blackjack_weapon_definition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/335c6c83-5ff9-4712-b2e2-9eb447139fea/zexeg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b43ea96-4948-4965-ae46-113b29d6cf7f/sweat_lynn_nottage_character_breakdown.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7117f43d-97f1-417c-85c3-f07bc414ef0a/english_to_spanish_translation_online_google.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72d30eed-8480-4847-8465-d1b941a94ec7/63429069665.pdfIn PDF document text
    • https://s3.amazonaws.com/gozilum/hungry_shark_mod_apk_hack_version.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab196adc-ef25-430c-b6c6-7a38dd139d27/79789007100.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b81f0a6-ddfc-45c6-9a6f-fc0637b6a8af/how_much_does_a_2.5_ton_trane_ac_unit_cost.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ecae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECAE 5548 bytes
SHA-256: d2fbb67b65ddaca5f90dc53c0194a66fe6d2a902a16309844a9ef0de4f7ca421
font_01_sfnt_off0000ff76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF76 10896 bytes
SHA-256: f6986878f23740d57e9d6eac23e341c7a3a8e6823d614f96c8edadbdf4d045f1

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