Malicious PDF — malware analysis report

Static analysis result for SHA-256 974a502820a75fa6…

MALICIOUS

PDF

67.1 KB Created: 2020-11-10 03:26:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 92b94c761610ef3dabef831b51a793f6 SHA-1: d6d20e05c0f5c28df24f190429801783baae6206 SHA-256: 974a502820a75fa6bcd4b085c88e84345e80b0f1b7c6bb93f8a6ef6b72fa216b
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or malware distribution attempt. It contains numerous external links, with a primary suspicious URL pointing to 'traffnew.ru'. The document body, though heavily obfuscated, suggests a lure related to a movie replica, likely to entice users to click the malicious link. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffnew.ru/strik?keyword=jyn+erso+blaster+replica PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4411915/normal_5f988fc56bb10.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385850/normal_5f8d695a5853d.pdfIn PDF document text
    • https://zezujigodet.weebly.com/uploads/1/3/4/0/134012897/linirika.pdfIn PDF document text
    • https://vixeroniwemeful.weebly.com/uploads/1/3/0/7/130740086/wamepenekazilu.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/zakunafu/jason_long_movies.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87da29de-1e5f-4743-ab21-26b78a678e5e/kawanuwamaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac8fdbbf-0f17-4d11-af82-4916d642813a/70203471733.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a442d57-4c34-45bc-be91-dbc36fa2e285/68469948354.pdfIn PDF document text
    • https://s3.amazonaws.com/suximawo/melapolutazesagigovamoge.pdfIn PDF document text
    • https://s3.amazonaws.com/gogonof/78495735312.pdfIn PDF document text
    • https://s3.amazonaws.com/wegemebufojafak/40294789712.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e63adaf4-c741-4b95-a509-04b29b334e63/watch_legend_of_the_guardians_the_owls_of_ga27hoole.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87dce76d-f08e-419d-a40d-c2146b5131c5/flying_pig_lab_physics_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/sizadagazagaj/perizuno.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a70f578d-1268-41ca-8033-49e69c7e663d/12940774621.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f924add-40f7-4e86-be22-4060b3f7eb6f/circuit_analysis_theory_and_practice.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c581e44-ac5d-4a89-a6f8-164ebd6c6694/87619740222.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_off0000c5c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5C1 5160 bytes
SHA-256: 65945bcc28d57ac208f90584175a174083477520217608381f769c99b790756f
font_01_sfnt_off0000d761.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD761 11708 bytes
SHA-256: 69aab35ea97014f3aa7dadb4f9b70a7b32aef1d574979cee1b8f90839264f2f9

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