Malicious PDF — malware analysis report

Static analysis result for SHA-256 06e36c484d8203b6…

MALICIOUS

PDF

91.7 KB Created: 2021-03-01 21:09:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 7c63d4e8ee17c94bae7730b28f03f328 SHA-1: 17134845794009038ec9c8a1d45f0101131ef58c SHA-256: 06e36c484d8203b6382f79a647bbd9f000ecebd8c05efd876693874aa71caca4
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF file is detected as malicious by ClamAV and an ML classifier, and contains numerous external URIs, many of which are hosted on disposable domains. The document body, though heavily obfuscated, appears to contain text related to a sewing machine manual, suggesting a lure to disguise malicious links. The presence of external URIs indicates an attempt to redirect the user to potentially harmful websites for further exploitation or phishing.

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 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=singer+heavy+duty+sewing+machine+4432+manual PDF link annotation
    • http://muldwych.com/lutupoviwilepakiniribidup3t89i.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408718/normal_6022c4ffdeb17.pdfIn PDF document text
    • http://idealica-italiauficiale.website/finding_perimeter_worksheets_3rd_grade3jhw6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463559/normal_600ba8fa7aeca.pdfIn PDF document text
    • http://xemakaze.mywebcommunity.org/good_korean_brands.pdfIn PDF document text
    • https://cdn.sqhk.co/fajixojemom/TPidhja/simerametetizab.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376619/normal_5fce338082dcf.pdfIn PDF document text
    • https://cdn.sqhk.co/soxoxefumuv/jhgheji/50613126166.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410727/normal_6006be791519e.pdfIn PDF document text
    • http://grafoanaliz.ru/interrogative_sentence_examples_with_answersh9dtl.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468551/normal_6016eb7975fd2.pdfIn PDF document text
    • https://cdn.sqhk.co/buwaxaxodi/ijgiehc/52509201036.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421957/normal_6015e36e9e8f8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443803/normal_6013bf6959555.pdfIn PDF document text
    • http://precabinets.xyz/despicable_me_bad_day_songs98sg.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zejibanunepi.myartsonline.com/what_kind_of_lasers_are_used_for_hair_removal.pdfIn PDF document text
    • http://tefetuzuzip.myartsonline.com/how_to_sketch_for_beginners.pdfIn PDF document text
    • http://mojozore.myartsonline.com/vicks_starry_night_humidifier_green.pdfIn PDF document text
    • https://s3.amazonaws.com/pulavokaxe/94991914082.pdfIn PDF document text
    • https://s3.amazonaws.com/tarajix/adding_perpendicular_vectors_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxutedi/pan_card_application_form_2019_nsdl.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_off000126c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126C9 6092 bytes
SHA-256: 07bb2a0fe4e70b6319f7c333b8c8a35ae4d16bc57a793c5b726ef2533d9d76de
font_01_sfnt_off00013b81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B81 10988 bytes
SHA-256: 955e35b9d2e583f2154a43f4836005f01375aefcde575ca2fafdbcdecf028846

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