Malicious PDF — malware analysis report

Static analysis result for SHA-256 9226d5bae09d9398…

MALICIOUS

PDF

76.3 KB Created: 2021-03-15 09:56:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 1d1244cb89391a1acf75e6950753ee3c SHA-1: 75186e5af1c6022b798ddee11153c26cfa3ebe37 SHA-256: 9226d5bae09d9398e3f9f3983e6d3b0d70b9970a0cf6b3e4d3be064490627fba
126 Risk Score

Malware Insights

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

This PDF document was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, with one prominent example being 'https://druttle.ru/wix?keyword=first+team+basketball+goals+hutchinson+ks', suggesting a phishing or redirection attempt. The document's structure and content indicate it functions as a link farm designed to direct users to potentially harmful external sites.

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://druttle.ru/wix?keyword=first+team+basketball+goals+hutchinson+ks PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4496378/normal_5fff44dfed1a7.pdfIn PDF document text
    • http://testrun.ru/50967728809g3s04.pdfIn PDF document text
    • https://cdn.sqhk.co/lajawawinu/i2gcdwV/39391019337.pdfIn PDF document text
    • https://cdn.sqhk.co/zoxowowi/EBjb5jj/9953780646.pdfIn PDF document text
    • https://cdn.sqhk.co/dejuxafe/hghiflo/armature_controlled_dc_motor.pdfIn PDF document text
    • http://shop-profildoors.ru/cant_download_gimp_on_macjad0f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470537/normal_60377f89d7d25.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393763/normal_5fe4e0b28fcc2.pdfIn PDF document text
    • http://reduslim-italiaofficial.site/giponumaluvupazigifofakicv9r7.pdfIn PDF document text
    • http://fevumajugo.iblogger.org/ninasubemobomomejaju.pdfIn PDF document text
    • http://batedezid.iblogger.org/385820218.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380674/normal_5fcaaadba0ada.pdfIn PDF document text
    • http://interbankdigital.com/brother_hl_2140_error_drumz7vtb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://76b44699-1094-4fd8-8d4a-70b7be8159c3.filesusr.com/ugd/c450b2_7a3c9dc284d0441da684ee66c0363814.pdf?index=trueIn PDF document text
    • https://01d7ec8a-e38e-4e33-8c76-1be31754498b.filesusr.com/ugd/24d943_96a2298d4cbc4b358942d1ca2fd21fab.pdf?index=trueIn PDF document text
    • http://zilokujidetomo.epizy.com/detelirewasil.pdfIn PDF document text
    • https://aa4c2489-c93b-4667-afab-104bf5323bad.filesusr.com/ugd/8b49c6_9d31580539274cf5a884ec243c8a8e7a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/ruzaganog/gogo_squeez_applesauce_nutrition_information.pdfIn PDF document text
    • https://s3.amazonaws.com/regovadeje/astm_a106_free.pdfIn PDF document text
    • http://zujopafupo.epizy.com/fozarimovobukofima.pdfIn PDF document text
    • https://s3.amazonaws.com/fujadabez/swords_of_ditto_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/farowug/24016642045.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_off0000ed1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED1E 5372 bytes
SHA-256: 72d2cba06bc0d3438bd98bf0ab225915aa7b4934ffac075a30e8cab600f57236
font_01_sfnt_off0000ff43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF43 10920 bytes
SHA-256: b127b0168109f24688ee9797dc53a740675d24c8be5c787ba95484afaca17d8b

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