Malicious PDF — malware analysis report

Static analysis result for SHA-256 1548e772a2306853…

MALICIOUS

PDF

103.2 KB Created: 2020-12-22 03:19:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b3419c50c17bf32577647174afad419b SHA-1: 7787fc236e617024104f7fc062d985bce3eb2c35 SHA-256: 1548e772a23068534bdef47652beccb2aa6dc6912f953a3104932b6cbabeb8cc
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to other PDFs, suggesting a link farm or SEO manipulation tactic. The primary external URL, 'https://traffine.ru/aws?utm_term=jazz+guitar+scales+and+arpeggios+pdf', is presented as a lure. While no scripts were explicitly extracted, the PDF structure and numerous embedded URLs are indicative of malicious intent, likely to redirect users to potentially harmful content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffine.ru/aws?utm_term=jazz+guitar+scales+and+arpeggios+pdf
    • https://bubawupuga.weebly.com/uploads/1/3/4/3/134380130/305106.pdf
    • https://cdn-cms.f-static.net/uploads/4390661/normal_5f9d607e9874b.pdf
    • https://wenojuzak.weebly.com/uploads/1/3/4/2/134265903/3006474.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/lanubili/kuvoxesi.pdf
    • https://s3.amazonaws.com/rizezobabub/bufujepinolo.pdf
    • https://s3.amazonaws.com/genukopapovixo/fopimip.pdf
    • https://static1.squarespace.com/static/5fce898d10aaab49c8e20a77/t/5fd1ab8fb0f0f842d7a3d512/1607576464979/cake_artist_studio.pdf
    • https://s3.amazonaws.com/donarepemi/sistemas_de_almacenamiento_de_datos.pdf
    • https://static1.squarespace.com/static/5fdff99b3fde9411a280964c/t/5fe084a1f23a830a59de4742/1608549538676/fegeroraxusarokesis.pdf
    • https://s3.amazonaws.com/damerirazib/ceptam_9_online_application_form.pdf
    • https://s3.amazonaws.com/sezutuma/50964091739.pdf
    • https://static1.squarespace.com/static/5fe03d0dddae52106f257856/t/5fe0c1a09a972854ee8b4e74/1608565153831/dividing_fractions_by_whole_numbers_worksheet.pdf
    • https://s3.amazonaws.com/rodakarugupoko/talereniboloj.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013b17.bin
d12e63d6e973057afdc6c743f8dbaecdeb9590a66fa0832d8b9375992a812147		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13B17 5244 bytes
font_01_sfnt_off00014cf3.bin
98da5072a2bd80a3227d4795bcc474ca0ef44a897143498b78186679176079b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14CF3 3020 bytes
font_02_sfnt_off0001592c.bin
fa87f9a6e9e061835a07680268cb0a8f9a8184f4d916644a610e840af0baeb4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1592C 11712 bytes
font_03_sfnt_off000180e3.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x180E3 4324 bytes

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