Malicious PDF — malware analysis report

Static analysis result for SHA-256 a52725ee17bb7e1c…

MALICIOUS

PDF

41.6 KB Created: 2020-11-07 11:14:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 9901625347916b424768dee20d57b3c8 SHA-1: 6849eddde677cd8ddfc6bd9ca6019fc6151c1005 SHA-256: a52725ee17bb7e1c4e8fc57fbadd682983b2328ac2ddb62bf388a06b850747a9
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://trafftec.ru/aws?keyword=township+apk+hack PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366045/normal_5fa6650e6b087.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387412/normal_5f935180cd24b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367297/normal_5f87801cdf986.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369904/normal_5f881e17ef991.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366623/normal_5f873651ef2df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369764/normal_5f8b1a6709cba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366313/normal_5f8faaf021a56.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/jazuravazaguz/ditoravevikegomapewuwa.pdfIn PDF document text
    • https://s3.amazonaws.com/libosokune/bayesian_data_analysis_second_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/az_203_exam_dumps.pdfIn PDF document text
    • https://s3.amazonaws.com/kiwopusafize/mapubofila.pdfIn PDF document text
    • https://s3.amazonaws.com/taturi/93495282508.pdfIn PDF document text
    • https://s3.amazonaws.com/besafefaf/gixidepiwubotozapele.pdfIn PDF document text
    • https://s3.amazonaws.com/ratixifo/86917990957.pdfIn PDF document text
    • https://duxagigeva.files.wordpress.com/2020/11/uterosacral_ligament_pain_during_pre.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_off000062a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62A3 4996 bytes
SHA-256: ce8ca5d321ce1b94ea40625f6efc101b053f432bbd86304ed3dd7e589ef649e0
font_01_sfnt_off000073b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73B7 10792 bytes
SHA-256: 3c80ef2792b73fcdb2a13f7654709554aaeafd13f9206306961bb41bb5b158fc