Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a6c6ecc101e99bc…

MALICIOUS

PDF

74.7 KB Created: 2021-03-10 10:48:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: b11e20996fc03191175e03739b08b1a8 SHA-1: 36ad50b1fd0684eaf84a566e3e79fbee66a4127b SHA-256: 0a6c6ecc101e99bcaf1cd62b6e1b92ea5beb5423f1050dce73044fb084f5ac24
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://fokemale.ru/award?keyword=pdf+to+word+converter+free+download+for+windows+7+filehippo PDF link annotation
    • http://ionatr.space/tezenobaqzb7u.pdfIn PDF document text
    • http://idealicaitaly-ufficiale.site/gramatica_de_la_lengua_espaola_onlinesy85x.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503525/normal_5fe6cdf97da59.pdfIn PDF document text
    • https://xojobade.weebly.com/uploads/1/3/4/3/134385351/toluwonewizob.pdfIn PDF document text
    • https://kiwepuzimogavuf.weebly.com/uploads/1/3/0/7/130776877/c3efdb0fa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417986/normal_5fea3b43b66bd.pdfIn PDF document text
    • http://itali-big.space/83111522967jwyfy.pdfIn PDF document text
    • http://texifudosino.mygamesonline.org/significado_de_la_simbologa_de_los_diagramas_de_flujo.pdfIn PDF document text
    • http://patajafurep.mywebcommunity.org/is_linear_a_good_garage_door_opener.pdfIn PDF document text
    • https://rakevuxex.weebly.com/uploads/1/3/4/0/134040666/lomuleripula_porovuwaragu_bupixepa_ninosinonojilim.pdfIn PDF document text
    • http://wiinorama.space/26609739485a1kue.pdfIn PDF document text
    • http://vazutiz.iblogger.org/yokatta_dx-_8_bundy_clock_user_manual.pdfIn PDF document text
    • http://alsamcctv.com/how_do_you_fill_a_rug_doctor255ch.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sopimofa.rf.gd/34025883606.pdfIn PDF document text
    • http://wumoxafu.epizy.com/bolanuwodeker.pdfIn PDF document text
    • http://sabixukavizom.myartsonline.com/parkinsons_physical_therapy_exercises.pdfIn PDF document text
    • https://de2ee6d5-caaa-4265-b15c-40100ab77d99.filesusr.com/ugd/d43733_70cc75e857284720a8a03fb1ae460e87.pdf?index=trueIn PDF document text
    • http://zesafemumibow.myartsonline.com/tisasalerajefewabe.pdfIn PDF document text
    • http://tikuvusupatel.rf.gd/game_dev_tycoon_money_cheat_android.pdfIn PDF document text
    • https://709e7e89-b264-4d73-b757-064736ed86f1.filesusr.com/ugd/f523c3_9873329b2bcf4fe6b1104a210c0dd6b7.pdf?index=trueIn PDF document text
    • http://fefugadabojenip.epizy.com/google_academico_artigos_cientificos.pdfIn PDF document text
    • https://c941d99d-b58b-4215-81ce-525e38db2b81.filesusr.com/ugd/2dc4cf_428f6d0a1c4b41d6a8dea59a9367765b.pdf?index=trueIn 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_off0000e62c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE62C 5476 bytes
SHA-256: 50325102a99bed9cc901653f8753815e06378e20bce0c44213c4c5b0cccd62f3
font_01_sfnt_off0000f8e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8E7 10696 bytes
SHA-256: a38d13c66e381fac571e782a763aa2040f853b023b613fc92a7cddc314484e1e

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