Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa145665fafb2ca3…

MALICIOUS

PDF

81.0 KB Created: 2021-05-13 05:27:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: be281cc6402302e503d790852f89351d SHA-1: 14e041d6d9385348485b9066aa499cc4488acc1f SHA-256: fa145665fafb2ca32a9eb82ce68190ee393db85f3df8a176a371327f22f59f35
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 0.9994

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://lozipotod.ru/strik?utm_term=kyocera+fs-1135mfp+kx+driver+windows+10 PDF link annotation
    • http://lovelyhouse.online/types_of_cnc_cutting_tools74w6o.pdfIn PDF document text
    • http://wonnaturila.space/word_search_mind_fitness_applicationy7tto.pdfIn PDF document text
    • http://rulajamizap.getenjoyment.net/18150306985.pdfIn PDF document text
    • https://cdn.sqhk.co/nadetajagupe/hie0pif/wasar.pdfIn PDF document text
    • http://suzamajotibe.mywebcommunity.org/suwovunoka.pdfIn PDF document text
    • https://cdn.sqhk.co/wemopizajazo/xSI1ihQ/4_pics_1_word_game_276.pdfIn PDF document text
    • http://mexicotop.xyz/fodajugarowain7b.pdfIn PDF document text
    • http://tdsevsvet.ru/what_do_you_need_to_become_a_private_investigatormd936.pdfIn PDF document text
    • http://sberbank.services/879479620513i70q.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/edd523ef-f9c0-4afd-ad4a-d58ca8b42973/is_there_a_cheaper_version_of_dyson_airwrap.pdfIn PDF document text
    • https://c4cd0dbc-23d7-4f11-b65f-2561cec8abe5.filesusr.com/ugd/516793_3b70f0d300fb4bf1b3a26b54ab1c0348.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vabedafozo/xevubevego.pdfIn PDF document text
    • https://8ca15cf9-c5bf-4329-906a-32df3c7b5ab7.filesusr.com/ugd/4ca7f5_da26dfe4fdf44970972eda344b98aba1.pdf?index=trueIn PDF document text
    • https://aee666f7-65d2-4416-8089-42e5bd85255d.filesusr.com/ugd/c4036c_22d25eaa2a1d499b958da98db2a42338.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/1655d1d1-edae-4a1a-aab3-b3558e6bebde/pema_chodron_when_things_fall_apart_excerpt.pdfIn PDF document text
    • https://s3.amazonaws.com/mudurixo/sijavogesunujam.pdfIn PDF document text
    • https://s3.amazonaws.com/gagagakigibapo/firovu.pdfIn PDF document text
    • https://a5fc3680-5c08-4cda-bd6c-abaa3bdf25bc.filesusr.com/ugd/ea5d7b_b4fc6a8a775f46b49542f9e2bf696c99.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/382e6d7b-fddf-4ce2-85d6-202954178865/kenmore_mini_ultra_sewing_machine_needle.pdfIn PDF document text
    • https://s3.amazonaws.com/zoluwivebiro/quran_recitation_with_translation.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d8f6876-0b80-4167-893e-06dd01e6e619/48331668101.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85093d50-f1b8-41b2-a199-2a06b8cce0c9/tureripoxasufowova.pdfIn PDF document text
    • https://s3.amazonaws.com/likadojivivofu/acids_and_bases_worksheet_doc.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_off0000fbd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBD9 6140 bytes
SHA-256: 939d5aa1fdde99448ca526577d804ab7c3c0c3baf3860abd60316c8a9655f5e8
font_01_sfnt_off000110d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110D6 11160 bytes
SHA-256: e457e4a58bb116257bb5eb1b9b7317388248dd2c0e53376c225fb5d5b794a481

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