Malicious PDF — malware analysis report

Static analysis result for SHA-256 358eb70b0cb27973…

MALICIOUS

PDF

78.3 KB Created: 2021-03-22 01:04:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 412279fb1221aa070b6540a172509b62 SHA-1: 9210e2d604fd8f8ae6d4359b87e1f6bdef36785b SHA-256: 358eb70b0cb27973caffb8f4d0da944005df6152046e25e8d7730c1750f4949c
204 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a remote-support lure. The file embeds a large number of external links characteristic of an SEO link farm and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 7

  • 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.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://botokaw.ru/wix?keyword=wedgie+google+drive PDF link annotation
    • http://forovasax.medianewsonline.com/bewelitoxujuro.pdfIn PDF document text
    • http://bulubuzigajuzar.getenjoyment.net/66501410205.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413968/normal_60426e89d9663.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460230/normal_5fcfe6094a84f.pdfIn PDF document text
    • http://lesosotedepa.22web.org/computer_science_engineering_books_free_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4505363/normal_602e6330277b1.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/gudukupir/75039820130.pdfIn PDF document text
    • https://34ee038b-87c9-4ed9-9b12-bdd9230df7f1.filesusr.com/ugd/f9d4cd_afa772c067784cd3b8886f9da8b6e489.pdf?index=trueIn PDF document text
    • http://gavuzolu.epizy.com/cable_tray_catalog.pdfIn PDF document text
    • https://s3.amazonaws.com/biwuwukesazef/jaguar_car_hd_wallpapers_1080p.pdfIn PDF document text
    • https://s3.amazonaws.com/pewebopufupe/area_and_perimeter_of_composite_figures_worksheet.pdfIn PDF document text
    • http://tubonunok.epizy.com/oxford_english_dictionary_drive.pdfIn PDF document text
    • http://rozosijamuruxo.rf.gd/census_2011_reports.pdfIn PDF document text
    • https://8b83d164-5e56-46cc-b941-48f48810ddf3.filesusr.com/ugd/76ce43_e1ae704841d1452c8bc22066c51dd656.pdf?index=trueIn PDF document text
    • https://80c8fd16-4cf8-4f9f-b52b-d6c956df8f3b.filesusr.com/ugd/1a94e8_6653115dfaac439791b7c36e976b02b8.pdf?index=trueIn PDF document text
    • https://cccd2283-d272-450a-840b-6541230ebad2.filesusr.com/ugd/5de1df_3b8da76267334209a6b271f13558598a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/likerajatob/61627612254.pdfIn PDF document text
    • https://s3.amazonaws.com/gonasidupij/how_to_learn_ethical_hacking_online_free_in_hindi.pdfIn PDF document text
    • https://s3.amazonaws.com/vibuvomomuv/vajevaguz.pdfIn PDF document text
    • https://s3.amazonaws.com/dojivewobasuval/83891356759.pdfIn PDF document text
    • https://s3.amazonaws.com/banula/christian_video_songs_telugu_free.pdfIn PDF document text
    • https://s3.amazonaws.com/papuja/maryland_boating_license_test_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/gurafoga/16275398409.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_off0000f835.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF835 4676 bytes
SHA-256: 26821ea7637dcbe8d14c82690036c3401d2f825c95fbc8e96f948d1531b55496
font_01_sfnt_off0001083f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1083F 10476 bytes
SHA-256: ade225bcd60213ef6fc54ade2894e624b34356ca9a5b59ec023443f11cf42045

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