Malicious PDF — malware analysis report

Static analysis result for SHA-256 582091934e2261bf…

MALICIOUS

PDF

40.3 KB Created: 2020-11-07 22:12:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: c9d2d18ab444bac19598390257fd34b7 SHA-1: db8e0be85e608d29fa214fd2e6accaaf3907cbfb SHA-256: 582091934e2261bfb3d894432bb45b81a1c948cdb805efed15c84ee216d4f9c4
124 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier as malicious and contains a link to known malicious redirector infrastructure. The embedded URL `https://traffking.ru/aws?keyword=the+best+fitting+panty+in+the+world+brand` is the primary indicator of malicious intent, likely leading to a phishing or scam page. The document body, though heavily obfuscated, also contains this URL, reinforcing its role in the attack.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://traffking.ru/aws?keyword=the+best+fitting+panty+in+the+world+brand In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369926/normal_5f8c3fc48757f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://manetomimexa.files.wordpress.com/2020/11/68091325827.pdfIn PDF document text
    • https://jizobote.files.wordpress.com/2020/11/39732937745.pdfIn PDF document text
    • https://suvarofora.files.wordpress.com/2020/11/95519257918.pdfIn PDF document text
    • https://s3.amazonaws.com/jagux/sat_grammar_practice_worksheets.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aacccb26-9083-4c80-bc18-ccd85636632e/siwokarapenasujomizej.pdfIn PDF document text
    • https://s3.amazonaws.com/dedinavesute/sydney_shark_game_unblocked.pdfIn PDF document text
    • https://jejagake.files.wordpress.com/2020/11/diduxinidejidaxa.pdfIn PDF document text
    • https://s3.amazonaws.com/rizezobabub/molasagaponekutamoko.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d14b58e-29b0-42f2-9c93-210c40bbe785/2653595149.pdfIn PDF document text
    • https://senaxaxibele.files.wordpress.com/2020/11/evertale_guide_training_dojo.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_off00005d04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D04 5588 bytes
SHA-256: eda28eb5c379b00066d227d19233582c4cbae018090552f664d69bbf47b17ed5
font_01_sfnt_off0000700d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x700D 10736 bytes
SHA-256: ca1ddf07d8b4abb85726bfaaf0efa28a9e3808f53ca41950d58a64a7aa48d15c

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