Malicious PDF — malware analysis report

Static analysis result for SHA-256 02687f75b9a0be37…

MALICIOUS

PDF

51.9 KB Created: 2020-11-05 23:27:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: ea02d36544af0f3e7fc7a555a2090ec6 SHA-1: d55017b550f2e750e1c425978bb5bb0ff2c96e7d SHA-256: 02687f75b9a0be37810fffd489decd64375e42f09cf13a1c08f27b1b833be241
96 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 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 1.0000

Heuristics 4

  • 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/strik?keyword=roblox+electric+state+darkrp+wiki PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369765/normal_5f8a3f839221e.pdfIn PDF document text
    • https://fevapeju.weebly.com/uploads/1/3/4/4/134468187/jeguvivol-tudesawazi-sinofukefus.pdfIn PDF document text
    • https://jatilesaza.weebly.com/uploads/1/3/4/3/134316516/1b912aba8ee.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/pazifetanegapu/atom_text_editor_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/muxixafapigoxifez.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/pofovobiwopulawalis.pdfIn PDF document text
    • https://s3.amazonaws.com/regovadeje/60589309516.pdfIn PDF document text
    • https://s3.amazonaws.com/suxiweke/sisesudar.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/50670705757.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/0383/9140/files/55733280881.pdfIn PDF document text
    • https://s3.amazonaws.com/tesapibebujep/pawopufakek.pdfIn PDF document text
    • https://s3.amazonaws.com/zijivevip/watch_ride_along_2_putlockers.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/61736229350.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/6716/9689/files/mythology_edith_hamilton.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64E8 5436 bytes
SHA-256: 52c82256703fac7e9d65dc087c1e7198fc163ccd196dbb61852fd49264a04d78
font_01_sfnt_off00007783.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7783 4048 bytes
SHA-256: e31bec100008d278df72c0f137bded4c3f5b0f83961810ba8a48737c7d9eba12
font_02_sfnt_off00008668.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8668 11372 bytes
SHA-256: a2cdce50774723b7e80aabbea64286408bb3765a92e8a2fd96f5f764b46fd403
font_03_sfnt_off0000ac2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC2E 16436 bytes
SHA-256: 9ed13a5f77d6a21e28548c47c81e58a18a0eaa81b82dc7488e8e9cc31087dbd7

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