Malicious PDF — malware analysis report

Static analysis result for SHA-256 47978fdcdfe79450…

MALICIOUS

PDF

75.7 KB Created: 2021-03-29 10:29:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 06f117718fba6af168aea0e24ea9b014 SHA-1: a629f05e27e69bec954cab130cd9a52fd8baa4e9 SHA-256: 47978fdcdfe79450b4f68936236837c866456a9eb725d94cde4f82a4799b6658
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 0.9997

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://gimoguvi.ru/123?utm_term=drivers+brother+mfc-+9340cdw PDF link annotation
    • https://cdn.sqhk.co/nogorodizet/gfsNhdY/dwight_eisenhower_ww2_speech.pdfIn PDF document text
    • http://lamalegujig.22web.org/vezejajitef.pdfIn PDF document text
    • http://voirlo.xyz/51048553462ocysb.pdfIn PDF document text
    • http://reabook.online/132031046423xo1m.pdfIn PDF document text
    • http://bomufofo.iblogger.org/28388408761.pdfIn PDF document text
    • https://cdn.sqhk.co/bowewulaxam/aNhiC0e/difuwor.pdfIn PDF document text
    • http://new-leggins.site/how_to_speak_english_fluently_in_10_daysh84bk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370092/normal_604902abd7920.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458428/normal_5fd696fb23cb6.pdfIn PDF document text
    • https://cdn.sqhk.co/laxefotogulo/3r0hajh/55823948208.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384839/normal_605167fd6503e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kijekamazeju.epizy.com/49708078247.pdfIn PDF document text
    • http://pidusuzelaju.epizy.com/sharon_kendrick_uploady.pdfIn PDF document text
    • http://xofiketur.rf.gd/15987484479.pdfIn PDF document text
    • http://suvejosojop.epizy.com/graham_hancock_podcast_2018.pdfIn PDF document text
    • http://linanimeb.rf.gd/33768120107.pdfIn PDF document text
    • http://bixuxopot.epizy.com/kinogukobituxufarit.pdfIn PDF document text
    • https://46c0acaa-de7d-4f46-84f0-c2cf1d8ff7d9.filesusr.com/ugd/ac1638_99229211c35346b0956baaa4aff1dc16.pdf?index=trueIn PDF document text
    • https://b64dd490-e5b9-492f-89ff-e398ecee904c.filesusr.com/ugd/5926b4_6afe2ea86be24c1489d6873d0cc3c1af.pdf?index=trueIn PDF document text
    • http://ganemezokefesuv.epizy.com/biblia_copywritingu_chomikuj.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_off0000e680.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE680 5892 bytes
SHA-256: d59382fe1ffa473719d3d01821063a4aeb2020f126f379fdc79689178c321377
font_01_sfnt_off0000fa8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA8B 10968 bytes
SHA-256: d3deadddb7794fd6518886cf13d3630b945c6e15384d7957336eedebb2ad57e3

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