Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f9eed6628c24871…

MALICIOUS

PDF

81.8 KB Created: 2021-05-29 04:11:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 0813762efb3e1f168887edd83b101392 SHA-1: f163c311ce7d0f3577b12c9cbf9b7db9267ac834 SHA-256: 1f9eed6628c24871fe0633697a39a89e4beb20b88717e6ae5fb11c60d1be4a9d
156 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 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 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://maypoin.ru/strik?utm_term=gta+v+money+glitch+ps4+offline PDF link annotation
    • https://zesozekoxetaba.weebly.com/uploads/1/3/4/4/134497604/1000535.pdfIn PDF document text
    • https://tiledumojamusej.weebly.com/uploads/1/3/4/0/134096308/5bb3b.pdfIn PDF document text
    • https://zoparimunafixi.weebly.com/uploads/1/3/4/3/134336740/c820c1af1d986.pdfIn PDF document text
    • https://zamupegokeza.weebly.com/uploads/1/3/1/6/131637483/pusefemixud.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369491/normal_6022502086095.pdfIn PDF document text
    • https://wagezulixi.weebly.com/uploads/1/3/2/6/132695300/vaweluregobakapip.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366639/normal_603b8cc3a6825.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/9562b9bd-32bc-486d-b267-800996265172/lavowowawibubal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d96ab6fa-587b-40f0-a344-2916dc59204e/prefixes_and_suffixes_video_5th_grade.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f78d74ec-e91f-45cd-827f-a105793a0438/fl_studio_mobile_new_all_pack_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1240fe5-7f3c-4c5b-9243-74c6b5e13ad3/dometic_rv_air_conditioner_thermostat_instructions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/114fc2a1-4806-41af-95b6-1395d0ed4e8a/33095318981.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0da171bb-d2ab-4b0b-a05d-ba665eb53ce4/investigacin_documental_sobre_el_concepto_de_tecnologa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83421ac5-c288-48fa-97a9-9415c1bf1d41/gathering_like_terms_algebra_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3211159d-9f22-4003-ba23-0dbfed3a1b4c/88854059583.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/453f5757-2e6a-4e8d-99a6-ac7f27a88eeb/8th_grade_math_minutes_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1e1e0fa-6a15-47f0-a057-303a8257d01b/41138089316.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ceef0af9-e8d3-465a-a059-3e2857347bbe/2124341748.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8a99c6f-bd6e-4e15-a62f-f3c67733a1db/the_fox_and_the_crow_answer_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a80fc77-3457-4dfb-8fa7-7e599fb4dcea/how_do_you_show_your_patriotism.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_off0000fffb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFFB 5616 bytes
SHA-256: b59d2efb15ec90a44f194c9cf4df7bb84c9573267703774b61da7a45c82fa3c9
font_01_sfnt_off0001131c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1131C 11528 bytes
SHA-256: 9f8a6267df46c9ba41735ea20b9f99a170f7bf87a5bc4fc8f472ded0c1e7cbbe

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