Malicious PDF — malware analysis report

Static analysis result for SHA-256 69869d225c61f13f…

MALICIOUS

PDF

80.1 KB Created: 2021-03-29 23:36:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 17cd9770cddb8dbe4692235682a18fcc SHA-1: 6d6b9661fdc0e5861bda56081754f35b222607bc SHA-256: 69869d225c61f13f35547480baa2e33c05941b1358c288fd16b3b81194525a4e
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 0.9998

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 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://jumiwimov.ru/strik?utm_term=ridgid+ms1290lza+12+sliding+compound+miter+saw+parts PDF link annotation
    • http://chestlune.online/ecological_economics_an_introduction_michael_common7qpz7.pdfIn PDF document text
    • http://scriptbook.xyz/wallpaper_dark_coloryfg1o.pdfIn PDF document text
    • http://kitigaw.22web.org/11726520474.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/garorowa/bikavanetonopu.pdfIn PDF document text
    • http://vepijukakogad.rf.gd/carbonates_and_evaporites.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c28c1da-9048-4421-b2b2-40242ea4d551/takaledonureb.pdfIn PDF document text
    • http://puxatubo.rf.gd/jatutikujogexukizumelosa.pdfIn PDF document text
    • http://vetigokalibexi.rf.gd/bill_of_sale_illinois.pdfIn PDF document text
    • http://wibiralor.rf.gd/2216155616.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be3a21ef-786a-458e-931a-0f49b82ad01a/samsung_ml-1640_paper_feed_problem.pdfIn PDF document text
    • https://s3.amazonaws.com/xukirizugukugi/fuwukosama.pdfIn PDF document text
    • https://s3.amazonaws.com/bubisifapagefe/backcountry_navigator_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/vawoginele/dusobodukidigo.pdfIn PDF document text
    • https://s3.amazonaws.com/pukiza/95305904806.pdfIn PDF document text
    • https://s3.amazonaws.com/mudurixo/ruger_lc9_vs_lc9s_trigger.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08b80534-6a18-4cc8-ae3b-2496b2e84b35/apple_pencil_not_working_properly_in_procreate.pdfIn PDF document text
    • http://surobufalinaxis.epizy.com/zomalit.pdfIn PDF document text
    • http://penabak.epizy.com/apa_format_article_citation_example.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_off0000fa76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA76 6024 bytes
SHA-256: f60b9e54716c4ff9b9d5477fa6e9ca482ac815e79bd81d8a35277c06fec5db2c
font_01_sfnt_off00010f06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F06 10448 bytes
SHA-256: 801637129063eb5a253c61d81574411770f85dc0dcc44bcfd382568d3b1f7f0b

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