Malicious PDF — malware analysis report

Static analysis result for SHA-256 29ae3286373fc63f…

MALICIOUS

PDF

79.2 KB Created: 2021-04-05 08:32:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 37ec105f9a47f9a6e10c9021b4f1907c SHA-1: ec6fc2e144e3fb63d6196668cadcc12c94c4088e SHA-256: 29ae3286373fc63fef6e4153d777ec54f15f7bd7bf633924211ccc47c01d8115
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://zajinet.ru/123?utm_term=sociology+book+pdf+for+css PDF link annotation
    • https://cdn.sqhk.co/wemojezuvegi/iijgXIe/68159067681.pdfIn PDF document text
    • https://cdn.sqhk.co/boxewemutox/h0boMhf/notes_from_the_underground_fyodor_dostoevsky_summary.pdfIn PDF document text
    • http://bugamuwilozibil.22web.org/39062885231.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421629/normal_601dcd0179fb4.pdfIn PDF document text
    • http://tulidefupevewub.iblogger.org/74779063321.pdfIn PDF document text
    • https://cdn.sqhk.co/beledufe/t5igiaB/pokemon_dark_rising_cheats_steal_trainers_pokemon.pdfIn PDF document text
    • http://5-euro.info/clark_forklift_trucks_service_manualsvxyy9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445333/normal_5fe17075d7b3f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386333/normal_602c3ce85c8ec.pdfIn PDF document text
    • https://cdn.sqhk.co/pozazoji/cSIjanX/transfer_news_bbc_arsenal.pdfIn PDF document text
    • http://tunabamilusi.mypressonline.com/fowururux.pdfIn PDF document text
    • https://cdn.sqhk.co/levowexesu/nBEjhgf/world_map_wonders_and_landmarks_of_the_world.pdfIn PDF document text
    • http://zazorin.scienceontheweb.net/togabobabasamegajimekap.pdfIn PDF document text
    • http://italiahot.space/65601519871upf0x.pdfIn PDF document text
    • http://alteramaks.world/motorola_scanner_mc9190_rebootulvp7.pdfIn PDF document text
    • http://bestunew.xyz/98313067536mm9ui.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379035/normal_60085cdb746a8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409255/normal_5fc6dcf44f6ef.pdfIn PDF document text
    • http://select-get.top/how_to_build_top_bar_hivebscl8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xigakixu.epizy.com/video_games_addiction.pdfIn PDF document text
    • http://tetexamafikej.epizy.com/93154981540.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_off0000f599.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF599 5520 bytes
SHA-256: 7af9789f9e1febc2881d52119da2602a239ace050967b97f86123d197d8d9abe
font_01_sfnt_off00010879.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10879 10960 bytes
SHA-256: 7d5b0b79365c5e604bd7b91e3e09525a46ce9158463c5da3de8ed572f1076586

Open this report in the interactive analyzer, or submit your own file for analysis.