Malicious PDF — malware analysis report

Static analysis result for SHA-256 2880f6798e66a182…

MALICIOUS

PDF

44.0 KB Created: 2020-11-05 00:27:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 0bf2e4e578f6c7dd6f40b2ae85d726db SHA-1: 7117912f6ad1007ab9d9bc5d21cc640e310d1457 SHA-256: 2880f6798e66a182398fcda22fdf5a027e18f34c6fc12f63417fb83225041618
94 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://cctraff.ru/strik?keyword=ezra+brooks+decanters+price+guide'. The ML classifier also strongly flagged this PDF as malicious. Although no scripts were extracted, the embedded URL is the primary indicator of malicious intent, likely serving as a lure for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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://cctraff.ru/strik?keyword=ezra+brooks+decanters+price+guide In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366375/normal_5f8bebb5138be.pdfIn PDF document text
    • https://riwisasivituw.weebly.com/uploads/1/3/1/0/131070703/kozupalir.pdfIn PDF document text
    • https://tapojofam.weebly.com/uploads/1/3/4/5/134518610/3453209.pdfIn PDF document text
    • https://nojarotawufa.weebly.com/uploads/1/3/4/3/134313922/7719621.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417315/normal_5f9bf24fec6f9.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://uploads.strikinglycdn.com/files/b4ab60ba-575f-4e52-b08e-fa87a06d07ad/70653146864.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6178aa8-1d11-4ea2-bc25-b8966db4fb72/concepto_de_competencia_segun_autores.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/gununeko.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/abfbbab2-f580-4a79-b5a6-b4d3769b8288/muburazevilod.pdfIn PDF document text
    • https://s3.amazonaws.com/mexavofezoxi/papa_was_a_rodeo_meaning.pdfIn PDF document text
    • https://s3.amazonaws.com/mukutud/cell_phone_detective_apk_mod.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D0C 5300 bytes
SHA-256: de9300c8769c61b792c0b107dbde5a5be7f67cd4b2a9a642c73bae3b3e0c570c
font_01_sfnt_off00006f25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F25 11224 bytes
SHA-256: a7f4abcc32cb0edb1edaf6de68ad4d6d360d19ff13d567dfbca39351fd6c0e94
font_02_sfnt_off0000954b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x954B 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34