Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9b226a39e84f252…

MALICIOUS

PDF

95.3 KB Created: 2021-03-23 01:05:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: fb4167a55f7476ea3c15f15b034f3d25 SHA-1: 9fa986f1a468fd45dbd0725fc1caa9428a17432b SHA-256: b9b226a39e84f2520737c743aa99cdaf9df86559436fc920ba6f6c422667fe7a
156 Risk Score

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 0.9996

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://jottigo.ru/123?utm_term=chocolate+movie+songs PDF link annotation
    • https://viferoxabuged.weebly.com/uploads/1/3/4/2/134235394/984619.pdfIn PDF document text
    • https://wuzizado.weebly.com/uploads/1/3/5/4/135401221/197c0bc9.pdfIn PDF document text
    • https://fulotetaputu.weebly.com/uploads/1/3/2/7/132740707/73e988e1fcf.pdfIn PDF document text
    • https://rupanusevufow.weebly.com/uploads/1/3/1/3/131380126/881202.pdfIn PDF document text
    • https://julavatevimire.weebly.com/uploads/1/3/4/6/134669339/mikota.pdfIn PDF document text
    • http://zibodotuf.mygamesonline.org/dir-655_latest_firmware_version.pdfIn PDF document text
    • https://wikifepum.weebly.com/uploads/1/3/3/9/133986434/xetolakomeju.pdfIn PDF document text
    • http://bamuwapinofaro.iblogger.org/baahubali_2_movierulz.pdfIn PDF document text
    • http://fulilip.iblogger.org/aur_ahista_kijiye_baatein_song.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/jesidofefe/possessive_adjective_worksheet_for_grade_1.pdfIn PDF document text
    • https://s3.amazonaws.com/jasipefulaxiduj/why_is_my_kinetico_water_softener_not_working.pdfIn PDF document text
    • http://lowexulakapugid.epizy.com/jiwakabalatetus.pdfIn PDF document text
    • http://mirivukavezigo.epizy.com/biogenesis_y_abiogenesis.pdfIn PDF document text
    • https://s3.amazonaws.com/garorowa/george_gershwin_summertime_sheet_music.pdfIn PDF document text
    • http://vavadot.onlinewebshop.net/561843935.pdfIn PDF document text
    • http://nijarigu.onlinewebshop.net/duzolovoparapipolu.pdfIn PDF document text
    • https://s3.amazonaws.com/juzowilipi/gastown_shopping_guide.pdfIn PDF document text
    • http://xogetusutu.rf.gd/44024477805.pdfIn PDF document text
    • https://s3.amazonaws.com/nerugiraxura/what_is_the_latest_android_phone_operating_system.pdfIn PDF document text
    • https://s3.amazonaws.com/vixuwogetiv/defatogaf.pdfIn PDF document text
    • https://s3.amazonaws.com/lukepepe/74908997874.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012cca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CCA 4988 bytes
SHA-256: 7985bd5c1bd2cd82647d4a611f2edd62dccdd66147bf76f90e52fd2d4492ea6b
font_01_sfnt_off00013da8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13DA8 11028 bytes
SHA-256: a32fa11d1d3265b61e9e58cc912eb32439af5db2df61f4c6932b16d8ffcad2f5
font_02_sfnt_off00016334.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16334 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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