Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d1feebaad45bcd8…

MALICIOUS

PDF

79.7 KB Created: 2021-03-18 00:46:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 5a06889f34354c973259c0cb1e57ea13 SHA-1: c3b2c7ae98b5a84113371767e9e00552ba7fc1f6 SHA-256: 0d1feebaad45bcd8f31716c563bece7a67abee5b6e082d260c3ae97021ac631f
156 Risk Score

Malware Insights

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

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 0.9997

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://lozipotod.ru/award?keyword=bartley+ridge+floor+plan+pdf PDF link annotation
    • http://rasidafepu.mypressonline.com/blackjack_pizza_menu.pdfIn PDF document text
    • http://artistichomesolutions.com/cowboy_chicken_frisco_menupnx7n.pdfIn PDF document text
    • http://pifanaliriwabo.mygamesonline.org/86632172365.pdfIn PDF document text
    • http://punejew.mygamesonline.org/multistage_bjt_amplifier.pdfIn PDF document text
    • https://tinabatof.weebly.com/uploads/1/3/0/7/130776088/1534931.pdfIn PDF document text
    • http://lorozetuwivu.medianewsonline.com/boardman_22_function_bike_computer_instructions.pdfIn PDF document text
    • http://zivemigidefis.mypressonline.com/guitar_chords_for_beginners_acoustic.pdfIn PDF document text
    • http://igbusinessabouthelp.com/selivuxodoflbm1b.pdfIn PDF document text
    • https://wilaruxade.weebly.com/uploads/1/3/4/8/134865150/gojepiwi-tagomadasivozek-togazarozabar-lamufoke.pdfIn PDF document text
    • https://dapavivilo.weebly.com/uploads/1/3/4/8/134895477/tejasomoleto_zukor.pdfIn PDF document text
    • https://jixerunoxeza.weebly.com/uploads/1/3/4/6/134678785/batuwevuveteg.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/woxotopapozokev/21018133824.pdfIn PDF document text
    • https://s3.amazonaws.com/mexavofezoxi/rexamadixavajodato.pdfIn PDF document text
    • https://s3.amazonaws.com/jodabiladezot/data_encapsulation_in_java.pdfIn PDF document text
    • https://7915398d-c9c2-4241-abdb-40cf742e4b8d.filesusr.com/ugd/d4df0f_a46f6624d3ed4157ac83e9c3c62924ab.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jowutoneranemuk/xubojexemukexali.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubatebedoxez/75282448569.pdfIn PDF document text
    • https://s3.amazonaws.com/ximupuv/sit-_stand_scissor_lift_keyboard_platform.pdfIn PDF document text
    • https://s3.amazonaws.com/viregujipowuru/bookishly_ever_after.pdfIn PDF document text
    • https://917ed8d3-8a9f-4c5c-a3ad-554e533308ad.filesusr.com/ugd/a4e402_9290cc1402454f68b92bbf96e81041e0.pdf?index=trueIn PDF document text
    • https://d1159ab4-cbf5-42eb-897b-83a5e94cd7da.filesusr.com/ugd/536122_6869224d9a8942329b8f4f282f983b70.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/moduxanakuri/elements_of_music_with_definition_and_examples.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_off0000fadf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFADF 5184 bytes
SHA-256: 7360eff8d8714f220b5c4cdaa53c0b0238f965e3c5d3adf10d23e1f9aefdd0af
font_01_sfnt_off00010ca3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CA3 11008 bytes
SHA-256: 6ba3d953d569c5d4d2856de5cc078eff9c3a5cae0a54e73befc693602a9c7d60

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