Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0f67e7d0dd75847…

MALICIOUS

PDF

85.4 KB Created: 2021-03-20 05:31:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 31faf18187b24d01fc7652da71582c30 SHA-1: 59526c2feb512aec57171eb86a322ddf38c080e6 SHA-256: c0f67e7d0dd7584745987acad878bf5714ce8afa3799528724aa894406936a22
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-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://dugedepap.ru/award?keyword=the+world+history+textbook+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4365575/normal_601eb4ed599dd.pdfIn PDF document text
    • http://knitfqph.site/tosewep4ewsy.pdfIn PDF document text
    • http://wejnpowk.space/exploration_craft_lite_apkhc5oe.pdfIn PDF document text
    • http://biomanua.website/what_is_the_standard_enthalpy_change_for_the_reaction_chegg6asqf.pdfIn PDF document text
    • http://modebedunizux.iblogger.org/video_calling_apps_for_android_tablets.pdfIn PDF document text
    • https://zenalebib.weebly.com/uploads/1/3/5/9/135966912/pokexidos-votobapizov-netebojab.pdfIn PDF document text
    • https://guvidojovutubev.weebly.com/uploads/1/3/4/6/134697602/ab8b7492cbd5a32.pdfIn PDF document text
    • http://alisabor.design/competitiveness_report_201047tam.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485710/normal_602d9b1c9a96b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bopexetosezulav.rf.gd/ziwixuvevisejudemaxinopad.pdfIn PDF document text
    • https://63209029-b609-4f89-80e5-af59b408cdb4.filesusr.com/ugd/0713e6_1d3bd39c707c443b9d32c0e637457b94.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/miwolezedubujoz/govuxegubedaxaranaj.pdfIn PDF document text
    • https://s3.amazonaws.com/loxopudizus/85888610082.pdfIn PDF document text
    • https://s3.amazonaws.com/pajeriramal/irobot_braava_jet_240_vs_250.pdfIn PDF document text
    • https://s3.amazonaws.com/xofalepelala/labivemotizugasis.pdfIn PDF document text
    • https://86f5e18a-8766-4ae7-b9bf-31430b627380.filesusr.com/ugd/911c12_438c4f005b11481aa38bbab70e9f4cad.pdf?index=trueIn PDF document text
    • https://76bf42c0-7447-45ed-8dd3-33f9786ae3ae.filesusr.com/ugd/ba2c19_501f0b72ae1f4240bd976862d577e742.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gapuruxumeg/abu_dhabi_investment_authority_annual_report_2016.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_off0001108f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1108F 5336 bytes
SHA-256: a77b7d96b1692caeeec0318ad11fb5cfdb35ae809ab5b7f4b466b5e88e86d4dd
font_01_sfnt_off000122c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122C5 11236 bytes
SHA-256: 9cc69296c6d7bc10e9db039638ec43400a0cdd56250ae9948da439dd39849f91

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