Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ce7e88772baa1b8…

MALICIOUS

PDF

81.3 KB Created: 2021-05-22 14:21:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: b29e448243f776c8c1b5f0863e67ee18 SHA-1: 30ed7cbb9e7e2683029892902536b120069ee85c SHA-256: 2ce7e88772baa1b8ac0555c493f18fdb00e952f6fa493314051d8c7d22228ed2
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a significant number of external links, identified as a PDF link farm, pointing to various PDF documents hosted on different platforms. The primary URL, 'https://nipisod.ru/strik?utm_term=west+virginia+tygart+valley+regional+jail+mugshots', suggests a potential phishing lure related to jail mugshots. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware.

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 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://nipisod.ru/strik?utm_term=west+virginia+tygart+valley+regional+jail+mugshots PDF link annotation
    • https://latibexuwer.weebly.com/uploads/1/3/0/7/130776356/2276486.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391331/normal_5ffa2bdd7bec3.pdfIn PDF document text
    • https://nizakibete.weebly.com/uploads/1/3/4/3/134386075/764242d048200.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404745/normal_60486f06df11c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378153/normal_6007573f79057.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368506/normal_6062f38b1b064.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456728/normal_603d3bce6c5dc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366646/normal_5ffe54fb6e4a8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412900/normal_5fd257ea0c561.pdfIn PDF document text
    • https://nibadaxolakawub.weebly.com/uploads/1/3/4/8/134882114/zolulopi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425924/normal_60295a1400428.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476767/normal_603be8f9145b7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483349/normal_5ff5e4334b63d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453730/normal_5fd8dc8d08829.pdfIn PDF document text
    • https://turakenedonatup.weebly.com/uploads/1/3/4/6/134610331/9cb21.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408707/normal_601eb54f68bd9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501659/normal_606bc8ed12b18.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/ca256da0-0c0c-46ca-b1df-030f6a921900/motorola_mc9190_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b79a2a9d-e811-4ca4-9b2b-953188f00dfe/petsafe_wireless_pet_containment_system_extra_collar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/129c92d8-4cb6-4b9d-8199-e91c4a9c65c8/principles_of_electronic_communication_notes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/027bbfe0-c4e3-40d2-8589-d82e6ad9938d/xeguve.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4975f951-833d-4667-8e37-5eb5b7f5d2fa/interview_questions_to_ask_teachers_about_classroom_management.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010136.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10136 5352 bytes
SHA-256: b5857872a8052431168dfdfdf57e2798bc5529adbb85966f3db74965750a6e85
font_01_sfnt_off00011354.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11354 10552 bytes
SHA-256: 5a20c9aad09d5e7fa2b4a8872e86efcca000214efab4821d189ba43fcae1e641

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