Malicious PDF — malware analysis report

Static analysis result for SHA-256 9eea0daa8057b938…

MALICIOUS

PDF

97.8 KB Created: 2020-12-15 21:42:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: b689cce53bcb272299a9244e062e07c7 SHA-1: e324c2943edc65c0ace89571fcd8fdd455235185 SHA-256: 9eea0daa8057b93800bdd68a99f20c83d4e797a41c30d18b158cf7cd037fe1b1
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious phishing malware. It contains a large number of external links, many of which are likely part of an SEO farm or a distribution network for malicious content. The presence of embedded URLs and the overall detection as phishing malware strongly suggest an intent to deceive users and potentially deliver further malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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://traffking.ru/123?utm_term=bidonvilles+dans+le+monde PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4383801/normal_5fa95acb261ae.pdfIn PDF document text
    • https://vuxarujetununo.weebly.com/uploads/1/3/4/4/134437765/7056640.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426407/normal_5fb9b5ad11da1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://static1.squarespace.com/static/5fc54a7e5e8e827d42aae423/t/5fc8408313de6e798153f8b8/1606959236209/sonic_the_hedgehog_toys_ebay.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6ded9579eee3ae06a23cc/t/5fc7cc8898e12849e0724713/1606929551984/jusavigide.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf53939d7936484084f19a/1606374292491/27730249121.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc18e758787e8798970a1dd/t/5fd1c0ad7c12252903f3e3fd/1607581869493/kolitefiriwilarexezodivim.pdfIn PDF document text
    • https://s3.amazonaws.com/vukusa/70820929227.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fce4fa390e5b06becb65dca/t/5fcfd982ec1c613cf6c3a1ba/1607457154341/fazolurerekowolawol.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0dd9b8ef7301f8b108504/t/5fc143567acac6192aef1a68/1606501209159/60999278314.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
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010cde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CDE 4692 bytes
SHA-256: d11f2686c3e8e7605bed0448919ef4c94406918a7dc5141395b882d42f4ac13d
font_01_sfnt_off00011ca8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CA8 5972 bytes
SHA-256: af03f1be9e29c7a41221b1cabfc24e69c75cb0af688ea20b327049290e262ec4
font_02_sfnt_off00012bf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BF9 13184 bytes
SHA-256: 25361d92cd69778264e2bf296fae7bffd40963eab397c912ce82f998af438f39
font_03_sfnt_off00015530.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15530 16060 bytes
SHA-256: d78d7cc1a68daa951b4fbccbcfb906d5a08ad384f187125596154666a45abe72
font_04_sfnt_off000169c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x169C5 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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