Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d26bdeac5d185b4…

MALICIOUS

PDF

78.4 KB Created: 2021-03-17 23:31:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 336052ffbea8867d864865888ff00e53 SHA-1: 5b4a2be281e5531a79fef138cda053b108ed919e SHA-256: 0d26bdeac5d185b4f2e4a2d8b11d6fc058c9b79b3449ee72bc95d9705ea3556d
154 Risk Score
Tags
free-cdn-ebook-manual-lure

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 routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://yafferge.ru/aws?utm_term=how+are+ecosystems+classified In PDF document text
    • https://cdn-cms.f-static.net/uploads/4477878/normal_60250cec4e481.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472186/normal_5ff1620642f37.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420767/normal_60467ff086c96.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408464/normal_602de089b8acc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474445/normal_60138bfe6381a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408475/normal_601a07b3ba365.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417648/normal_5fd1b7382ecdb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382421/normal_6023f12c49f6c.pdfIn PDF document text
    • http://boviriso.22web.org/can_you_air_fry_a_boneless_turkey_breast.pdfIn PDF document text
    • http://zesepajokab.22web.org/bwv_1013_guitar.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/womirofop/grade_sheet_template_editable.pdfIn PDF document text
    • https://s3.amazonaws.com/fejenijovekozu/nudolelarivatufefarapel.pdfIn PDF document text
    • https://s3.amazonaws.com/nevowimo/why_wont_my_fitbit_versa_lite_pair_with_my_phone.pdfIn PDF document text
    • http://zaximibirada.epizy.com/sigemovesegokesavatunumi.pdfIn PDF document text
    • https://s3.amazonaws.com/gosete/vascular_malformation_head_and_neck_radiology.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67b18188-5c75-4820-aa7c-620094898915/what_is_history_of_christmas.pdfIn PDF document text
    • https://s3.amazonaws.com/dojonuta/creative_cloud_direct_adobe.pdfIn PDF document text
    • https://s3.amazonaws.com/muvemasoxaji/sulupidupeni.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d48508e-af67-4dfa-b145-3c41dc11a18e/65590646579.pdfIn PDF document text
    • http://noluduji.epizy.com/64982590527.pdfIn PDF document text
    • https://s3.amazonaws.com/viregujipowuru/xerexibabus.pdfIn PDF document text
    • http://genavologu.rf.gd/ashton_drake_monkeys_for_sale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c6dda1f-bf37-41f9-9f42-b7cf100d2bfc/the_secret_dare_to_dream_netflix_imdb.pdfIn PDF document text
    • https://s3.amazonaws.com/pizivurapab/puwojodixuwidav.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_off0000f327.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF327 5324 bytes
SHA-256: 766f247930c13e601427cd3a372598ce15e13e9b66c2e167fc13521eaf2ffbed
font_01_sfnt_off00010541.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10541 10996 bytes
SHA-256: 398ce65e841d3899b710b1509ba56b9649574de85c852a401b8bee9b01189c50

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