Malicious PDF — malware analysis report

Static analysis result for SHA-256 97e285667e528ae7…

MALICIOUS

PDF

78.4 KB Created: 2021-04-16 07:52:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: d382fc849584184ab1c5987529984d32 SHA-1: 309e24f84a8ea9235a83f196c4c25718af62fd76 SHA-256: 97e285667e528ae7accc421991d8a6074826eed3b8e624715d93d51cb390203e
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious. It contains numerous embedded URLs, with one pointing to a disposable hosting domain that appears to be part of a link farm. The primary malicious activity observed is redirecting the user to external content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://kuzutuzo.ru/strik?utm_term=when+did+brown+v+board+of+education+happen PDF link annotation
    • http://womafogexuko.iblogger.org/o_alienista_machado_de_assis.pdfIn PDF document text
    • https://cdn.sqhk.co/xibetevoxaj/jfqjijj/ikea_flat_pack_house_australia.pdfIn PDF document text
    • http://povegoj.22web.org/intro_a_dressage_test_with_diagrams.pdfIn PDF document text
    • http://pibosezegis.22web.org/upload_to_website.pdfIn PDF document text
    • http://majozugu.iblogger.org/24980691569.pdfIn PDF document text
    • https://cdn.sqhk.co/mezigiduze/0Khf7EE/graalonline_ol_west_status_codes.pdfIn PDF document text
    • http://nozijepirag.22web.org/bopovafegegixoweduwino.pdfIn PDF document text
    • http://ronojalad.22web.org/29209212951.pdfIn PDF document text
    • https://cdn.sqhk.co/vawapisoxe/8IEH3MR/23995567275.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/9865247d-110f-40c0-aa61-b5394d5367f7/los_elementos_radiactivos_de_la_tabla_periodica.pdfIn PDF document text
    • http://satosawinesuf.rf.gd/kegogem.pdfIn PDF document text
    • https://s3.amazonaws.com/rokuwapesu/day_of_the_dead_pumpkin_carving_templates.pdfIn PDF document text
    • https://eb62986f-0112-409a-9ebe-777412bc5c19.filesusr.com/ugd/26938b_e0feff10c52f47d9a791333dfbe5edaf.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zunaporam/cafeland_mod_apk_hack.pdfIn PDF document text
    • https://s3.amazonaws.com/didowugorokirug/89091326806.pdfIn PDF document text
    • https://f1cb2ec4-a82d-4768-8a06-5236a2db220e.filesusr.com/ugd/a2e20a_447989d5da6242efb82619610097e8d4.pdf?index=trueIn PDF document text
    • http://xufoturimixeb.epizy.com/16848363872.pdfIn PDF document text
    • http://zadagudigewe.rf.gd/xerox_workcentre_3325_toner_reset.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68fa1716-cd37-41b4-a559-90cccfe8d215/zuzofajasularexawegi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43ce09af-edd6-401b-9ad3-8a4106a6fece/how_is_scarcity_related_to_competition_group_of_answer_choices.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/807417a0-43c3-4c72-8e95-1982f79d5864/13139813275.pdfIn PDF document text
    • https://s3.amazonaws.com/xezonijida/65552503652.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32072689-61f4-4daa-8140-dfe99f1685bc/wuxesedek.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_off0000f393.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF393 5340 bytes
SHA-256: fe56f3fb529076536415a245121f7b8e626d9436d0b635eabfeca9d29452af30
font_01_sfnt_off000105cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105CF 10532 bytes
SHA-256: e7ed003f503e43b2f950a8ff0611e79bb909023607aae08f7a33d351789cbce4

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