Malicious PDF — malware analysis report

Static analysis result for SHA-256 baf3ff00d2ca9f42…

MALICIOUS

PDF

93.9 KB Created: 2021-01-01 19:12:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 77a4d8a541fdcd7fb198bda4022c5695 SHA-1: 1240337d68a500cdc8aa6c34ec84adecdacdf753 SHA-256: baf3ff00d2ca9f428f5ed2f594f302468ee0fac0d068746a956a025463097b3d
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with one heuristic specifically identifying a 'PDF_SEO_LINK_FARM' pattern. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded URL 'https://trafffi.ru/strik?utm_term=did+it+again+lyrics+lil+tecca+deutsch' is likely a phishing or malware distribution point, and the presence of multiple S3 bucket links suggests an attempt to obscure the true malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://trafffi.ru/strik?utm_term=did+it+again+lyrics+lil+tecca+deutsch PDF link annotation
    • https://fofonameg.weebly.com/uploads/1/3/4/5/134522304/putixujilonaf-simukafodanobi.pdfIn PDF document text
    • https://wosobariwosamu.weebly.com/uploads/1/3/4/3/134372044/28e107b18caf.pdfIn PDF document text
    • https://cdn.sqhk.co/texekikevow/XKzTxln/call_espn_plus_customer_service_phone_number.pdfIn PDF document text
    • https://cdn.sqhk.co/vikoparif/6KjjjgZ/bud_farm_grass_roots_cheats_iphone.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://s3.amazonaws.com/rewepalazamiso/app_store_s_not_working.pdfIn PDF document text
    • https://s3.amazonaws.com/nisoxow/fha_streamline_refinance_worksheet_2019_hud.pdfIn PDF document text
    • https://s3.amazonaws.com/livivuvuwugeb/backtrack_5_android_app_free.pdfIn PDF document text
    • https://s3.amazonaws.com/potevip/kinemaster_app_download_for_pc_windows_10.pdfIn PDF document text
    • https://s3.amazonaws.com/nuruvapozixix/62491322805.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxomigo/latodonojixogu.pdfIn PDF document text
    • https://s3.amazonaws.com/kosipefojaw/98406931566.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 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e019.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE019 5108 bytes
SHA-256: c93e0ef21c039d95d99605c5fdf990538d1d0e7e5f18178d1caeaebe3ede9256
font_01_sfnt_off0000f1dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1DD 5072 bytes
SHA-256: c7c01019491dc3527226e9c0678f473f98dbe6aa90d76d014d448ea2a73da972
font_02_sfnt_off0001030e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1030E 6820 bytes
SHA-256: 399d9886fef5178cba49fdeaa528ade359ca020db01582b27771ffc01dd5f1bd
font_03_sfnt_off00011539.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11539 18436 bytes
SHA-256: 94547d9bd62640ad77e9f20b7462c22971c7bb5214ad5697336b670ba22b7ab8
font_04_sfnt_off000145af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x145AF 16304 bytes
SHA-256: 5e509f26d30b75872831c5965dce2f350b080fee5019cca5c028ea7520ca422c
font_05_sfnt_off00015b61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15B61 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

Open this report in the interactive analyzer, or submit your own file for analysis.