Malicious PDF — malware analysis report

Static analysis result for SHA-256 354ed511fdfed743…

MALICIOUS

PDF

85.8 KB Created: 2021-03-24 17:56:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 7d75c0dc74bbecc4e6eea01532a31e5b SHA-1: 19b341d08268f733376c62711725ca970d8c3daa SHA-256: 354ed511fdfed74353a18de38db72bd0c9d754cf68ff9a3efdd5260b9f49f5cc
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 0.9996

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://fokemale.ru/wix?keyword=sprite+and+mentos+eruption PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4421767/normal_5feb5d40dfe13.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414352/normal_602ff3ec7eefc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385421/normal_5ffb90b0b22a0.pdfIn PDF document text
    • http://hh666o.site/69866310038djl55.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391636/normal_60271bf0a172f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401505/normal_60303e270a56b.pdfIn PDF document text
    • http://consumer-data-protection-bureau.com/john_deere_s1400_owners_manual2hpqr.pdfIn PDF document text
    • http://trastqort.online/8686620839447fcb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408718/normal_5ff3b769600b2.pdfIn PDF document text
    • http://roduzida.iblogger.org/how_to_write_a_movie_review_for_beginners.pdfIn PDF document text
    • http://momentikshop.space/the_backbenchers_3_days_of_summer_free_downloadp8yao.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465949/normal_5fd379a266d50.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/jawusawar/savegegopapugudud.pdfIn PDF document text
    • http://fesamemosonug.rf.gd/fender_passport_venue_2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/650a3698-c6a0-4397-9f11-b86a8352ada1/sat_test_preparation_classes_near_me.pdfIn PDF document text
    • https://s3.amazonaws.com/pazovugal/32256138888.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b29bb842-9339-4974-8948-c5661f22726a/how_to_connect_to_a_brookstone_bluetooth_speaker.pdfIn PDF document text
    • http://kamegil.epizy.com/8389523076.pdfIn PDF document text
    • https://s3.amazonaws.com/xutomoxu/30677739581.pdfIn PDF document text
    • https://s3.amazonaws.com/nuvukivaxiren/carrom_board_java_game_128x160.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/33c92254-e226-418a-af32-3271f78447b1/ovid_metamorphoses_book_8_translation.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fab0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAB0 5176 bytes
SHA-256: 4f93fc7fa8bde426a5d754be1ce7b76f4e52954c4269bcc96bcb98e93a07af9d
font_01_sfnt_off00010c2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C2E 11272 bytes
SHA-256: 4c001af8d03a812338bc78ba382d98f5d2d475ffb6d85f8a952025e5ce27060e
font_02_sfnt_off0001328a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1328A 16168 bytes
SHA-256: 80e30d34f3d3279229b0ba92537a2212c02818f5c50d25fdf6ed03445d54b617

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