Malicious PDF — malware analysis report

Static analysis result for SHA-256 32b2fbfd80e155ba…

MALICIOUS

PDF

64.7 KB Created: 2021-03-06 03:57:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 04bd09f5b4059b902adf0a1df7424896 SHA-1: 8e9c9d4b6e4445d002bbc6074beb5f85ba1d5732 SHA-256: 32b2fbfd80e155ba6d66db0279841e8a06eb951ff558961baaa48d36042c3f80
126 Risk Score

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://botokaw.ru/123?utm_term=how+to+oil+a+mechanical+clock+movement PDF link annotation
    • http://tamowigaxijatot.66ghz.com/menanagogoziretajojovite.pdfIn PDF document text
    • http://xufelaketodo.getenjoyment.net/excel_vba_user_defined_function_argument_description.pdfIn PDF document text
    • http://giwewewobarijis.22web.org/misujapofis.pdfIn PDF document text
    • http://nopotaz.medianewsonline.com/who_should_play_kvothe.pdfIn PDF document text
    • http://idealicaitalia-official.site/cms_web_design_templates8efa7.pdfIn PDF document text
    • http://rbqjkwklnd.xyz/11710580936omzn5.pdfIn PDF document text
    • http://gexopidikimo.mygamesonline.org/noperodegasivimanikon.pdfIn PDF document text
    • http://vuvodagedene.scienceontheweb.net/88599216525.pdfIn PDF document text
    • http://granitmetrospecstroy.ru/strength_training_routine_for_weight_loss121sg.pdfIn PDF document text
    • http://reduslimitalia.website/404512317153l5ly.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pulilidason.epizy.com/android_adaptive_icon_ionic.pdfIn PDF document text
    • https://s3.amazonaws.com/nerugiraxura/army_trumpet_sound.pdfIn PDF document text
    • http://giwaxavuf.epizy.com/alegreya_sc_regular_font_free.pdfIn PDF document text
    • https://s3.amazonaws.com/farowug/97025164752.pdfIn PDF document text
    • http://litorow.myartsonline.com/la_mascara_de_la_muerte_roja_cuento_de_edgar_allan_poe.pdfIn PDF document text
    • http://limebeb.epizy.com/piredej.pdfIn PDF document text
    • http://luwegovufa.epizy.com/niporusap.pdfIn PDF document text
    • https://s3.amazonaws.com/pukiza/tamomogalibinevoxa.pdfIn PDF document text
    • https://s3.amazonaws.com/xisakazelelinim/60973411764.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_off0000c5af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5AF 4944 bytes
SHA-256: ac28bfdec701a451e57f21305b9c33b46b8ff1ee095a56ddaf5ccf6c01b8e436
font_01_sfnt_off0000d66c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD66C 9156 bytes
SHA-256: 0720887ff4af5802fb13c32a552c504ef57de74093ec58816b4f9cf9fa23c71c

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