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) First seen: 2026-06-04
MD5: b3419c50c17bf32577647174afad419b SHA-1: 7787fc236e617024104f7fc062d985bce3eb2c35 SHA-256: 1548e772a23068534bdef47652beccb2aa6dc6912f953a3104932b6cbabeb8cc
254 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 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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 In PDF document text
    • https://s3.amazonaws.com/lanubili/kuvoxesi.pdfIn PDF document text
    • https://s3.amazonaws.com/rizezobabub/bufujepinolo.pdfIn PDF document text
    • https://bubawupuga.weebly.com/uploads/1/3/4/3/134380130/305106.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390661/normal_5f9d607e9874b.pdfIn PDF document text
    • https://s3.amazonaws.com/genukopapovixo/fopimip.pdfIn PDF document text
    • https://wenojuzak.weebly.com/uploads/1/3/4/2/134265903/3006474.pdfIn PDF document text
    • https://s3.amazonaws.com/donarepemi/sistemas_de_almacenamiento_de_datos.pdfIn PDF document text
    • https://s3.amazonaws.com/damerirazib/ceptam_9_online_application_form.pdfIn PDF document text
    • https://s3.amazonaws.com/sezutuma/50964091739.pdfIn PDF document text
    • https://s3.amazonaws.com/rodakarugupoko/talereniboloj.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://static1.squarespace.com/static/5fce898d10aaab49c8e20a77/t/5fd1ab8fb0f0f842d7a3d512/1607576464979/cake_artist_studio.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdff99b3fde9411a280964c/t/5fe084a1f23a830a59de4742/1608549538676/fegeroraxusarokesis.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fe03d0dddae52106f257856/t/5fe0c1a09a972854ee8b4e74/1608565153831/dividing_fractions_by_whole_numbers_worksheet.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013b17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B17 5244 bytes
SHA-256: d12e63d6e973057afdc6c743f8dbaecdeb9590a66fa0832d8b9375992a812147
font_01_sfnt_off00014cf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14CF3 3020 bytes
SHA-256: 98da5072a2bd80a3227d4795bcc474ca0ef44a897143498b78186679176079b4
font_02_sfnt_off0001592c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1592C 11712 bytes
SHA-256: fa87f9a6e9e061835a07680268cb0a8f9a8184f4d916644a610e840af0baeb4f
font_03_sfnt_off000180e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x180E3 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333