Malicious PDF — malware analysis report

Static analysis result for SHA-256 bed03a3b9dbbb00b…

MALICIOUS

PDF

59.6 KB Created: 2020-11-07 02:23:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 629b8352a3e50becb14c504376ee497a SHA-1: d77c5e5aad45386deeab415214a65e76e6e461c7 SHA-256: bed03a3b9dbbb00bf3f5fb9c9686c2e2b43f8fe920bccc63080fbd49fe1d83d2
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://trafftec.ru/aws?keyword=pokemon+blazing+emerald+complete+rom+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4412170/normal_5fa3e7d348e5d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369927/normal_5f8f50b67a6eb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366302/normal_5fa4ab94ac4e5.pdfIn PDF document text
    • https://befakudi.weebly.com/uploads/1/3/4/5/134595811/xewisuwowo-pupofefase-lexagukiz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366018/normal_5f87bca0e8507.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366661/normal_5f9cf00bd82f1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368496/normal_5f8f6e754d76a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383915/normal_5f9260ec5d708.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/film_score_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/xazarujokemus/38296572532.pdfIn PDF document text
    • https://s3.amazonaws.com/fajixe/cch_chuyn_thnh_file_nh.pdfIn PDF document text
    • https://tevarew.files.wordpress.com/2020/11/88608638079.pdfIn PDF document text
    • https://s3.amazonaws.com/gotijejaj/minerals_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabom/bewawosawol.pdfIn PDF document text
    • https://kijemidad.files.wordpress.com/2020/11/3035765468.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000099bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99BD 5352 bytes
SHA-256: b661d150e98fe95767e901a06c90482ad8969d3b31c42d3937444ff202e42d68
font_01_sfnt_off0000abe4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xABE4 11572 bytes
SHA-256: 6812f2cc33206b314b085fd8744f25db0de52cc20e9780f8c4d664db1051917b
font_02_sfnt_off0000d312.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD312 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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