Malicious PDF — malware analysis report

Static analysis result for SHA-256 c458b1f8368c3a3e…

MALICIOUS

PDF

44.0 KB Created: 2020-11-08 19:49:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f81e945c8e881dbae44ed6def017b460 SHA-1: be7eda94a12dd8135517060971e8195b8c11b5dc SHA-256: c458b1f8368c3a3e21f24a312dd94a92e454356a470c06c146469fcd23ddf385
96 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a link farm, indicating a large number of external links. One of these links, 'https://traffking.ru/123?keyword=world+hardest+game+2+hacked', is directly embedded in the document body and is flagged as malicious. The document's structure suggests it's designed to exploit users searching for game hacks, leading them to potentially malicious content.

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/123?keyword=world+hardest+game+2+hacked
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/8709547.pdf
    • https://disavapiviloma.weebly.com/uploads/1/3/4/3/134351159/dupaxub.pdf
    • https://rujogapojepon.weebly.com/uploads/1/3/4/5/134597846/powupimixarasa-senixuxonoko-webosuvitixi.pdf
    • https://vokobilozo.weebly.com/uploads/1/3/4/2/134235622/e6b67197e81b81.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/nademopor/73118118876.pdf
    • https://s3.amazonaws.com/zarusegibitumet/ae_doctor_working_hours.pdf
    • https://s3.amazonaws.com/lujatolu/trf_paper_avid_printable.pdf
    • https://s3.amazonaws.com/lodunixodetum/richland_county_ohio_probate_court_forms.pdf
    • https://s3.amazonaws.com/mukutud/camus_selected_essays_and_notebooks.pdf
    • https://s3.amazonaws.com/dinilederu/subway_surfers_hack_apk_mediafire.pdf
    • https://s3.amazonaws.com/vufuzewasi/kujetulagifulira.pdf
    • https://s3.amazonaws.com/jepavilutabilel/deborah_norville_everyday_yarn_colors.pdf
    • https://s3.amazonaws.com/jafujasiwetid/gobikosogevulovu.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006bfd.bin
3f969ee651f24dc0f373161ce68404e8b62f768133c7c71ab0a362dc392103fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BFD 5560 bytes
font_01_sfnt_off00007ec9.bin
dfa464922d5ac930155a5fbc4c1e0ca3a119d021730bf116f555a0f02c608386		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EC9 10744 bytes

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