Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b59cf5816c2c1dc…

MALICIOUS

PDF

72.1 KB Created: 2020-12-23 01:19:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: d2480b3e423dabf5d731fe3bc049590c SHA-1: f7d0702c61cdd7bdc5b64b81a7ff0168cf1b7f02 SHA-256: 1b59cf5816c2c1dcd9040d2e51a69023e2e2defa275023e57c5b3704e62b87b8
94 Risk Score

Malware Insights

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

The PDF contains an embedded URL that points to a known malicious redirector. The ML classifier also flagged this PDF as malicious with high confidence. The document body, though heavily obfuscated, contains text related to 'video recording camera for android', suggesting a lure to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffine.ru/aws?utm_term=video+recording+camera+for+android In PDF document text
    • https://static.s123-cdn-static.com/uploads/4376878/normal_5fca188108507.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407313/normal_5fa8b335a0671.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://s3.amazonaws.com/guwutivupudutu/rotajafikewosifolatagiw.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc280b3405d5340f333d31f/t/5fca6ff5ace18435138a9dae/1607102454677/gigiwe.pdfIn PDF document text
    • https://s3.amazonaws.com/paropabaru/79302711958.pdfIn PDF document text
    • https://s3.amazonaws.com/muvemasoxaji/wyrmlad_monster_legends.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe0acdcb3e0f577115d054/1606290125968/60038664543.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc57202b8467722f1f27178/t/5fd66fc30f11661d4c2db45d/1607888836131/defejefosotogogali.pdfIn PDF document text
    • https://s3.amazonaws.com/retisovojor/53038648787.pdfIn PDF document text
    • https://s3.amazonaws.com/kikunojulejuj/uniden_bearcat_scanner_bc345crs_manual.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc56133a3bf4b14abc7046c/t/5fcbcdf7a0b42e3566b1f541/1607192056719/farare.pdfIn PDF document text
    • https://s3.amazonaws.com/zeworibuzoza/xulisafa.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdf246b2dcd53187f20af33/t/5fdf9acf0f6c913d4408c4ba/1608489681132/best_guided_tour_companies_ireland.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_off0000cfd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFD4 4804 bytes
SHA-256: ec2d8279363eed123dd382c4ced654e32437f3b03daa7906109f88df9fac2569
font_01_sfnt_off0000dfff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFFF 10300 bytes
SHA-256: 37d6307e9d2f6305624e1d89a1c8701f80957e6d3d28b29d17d930648bf0381d
font_02_sfnt_off00010342.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10342 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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