Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1c565ebbefb00a2…

MALICIOUS

PDF

70.8 KB Created: 2021-02-15 21:57:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 13588c35ab7a3308117ad44ee6964715 SHA-1: 2c3891841062c055af710fe3002f3871edd10e81 SHA-256: c1c565ebbefb00a28c2113504ed9951845dc44ddf8f109bf20e948a65e3512cf
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that mimics a search result for vacuum cleaner reviews, likely a phishing lure. ClamAV and ML classifiers strongly indicate maliciousness, and the presence of external URIs suggests the document is designed to redirect the user to a malicious site. No scripts were extracted, but the PDF structure itself facilitates the attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://bologen.ru/123?utm_term=are+any+vacuums+as+good+as+dyson PDF link annotation
    • https://cdn.sqhk.co/rewufarelaze/jhihfhd/nudogolokuvogonobeme.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481539/normal_5ffef63ea1851.pdfIn PDF document text
    • https://cdn.sqhk.co/goberirud/hgih5if/earn_to_die_1_apk_free_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402503/normal_5fe516a7f16f9.pdfIn PDF document text
    • https://cdn.sqhk.co/dutedape/haChjfr/shark_ion_x40_cordless_vacuum_reviews.pdfIn PDF document text
    • https://cdn.sqhk.co/sekigozujeme/CjeOvMV/mirrorless_camera_sales_figures.pdfIn PDF document text
    • https://cdn.sqhk.co/vodadavubex/gigeLja/blocky_farm_mod_apk_unlimited_money_and_gems.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369185/normal_5fea23e9d4986.pdfIn PDF document text
    • https://cdn.sqhk.co/midubevine/baHhahe/graphite_transfer_paper_near_me.pdfIn PDF document text
    • http://jobauthor.online/93161265968puvkr.pdfIn PDF document text
    • http://helplnstagram-confirm.com/76805659114sgt2a.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/xovekolamoxe/vipitof.pdfIn PDF document text
    • https://s3.amazonaws.com/jeduzizonox/80380667599.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d7f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7F8 5376 bytes
SHA-256: f9b68ff1adabd1f3cdf8b333444bfb2f90a0207082c8c14ed47079f65b26c21b
font_01_sfnt_off0000ea3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA3C 10676 bytes
SHA-256: f5f30100f5bcbacd1e4dca19c59b5b23aaf446043cdfc5c477ad07ec36aed192