Malicious PDF — malware analysis report

Static analysis result for SHA-256 cdaa0cfb0cfe40cf…

MALICIOUS

PDF

35.8 KB Created: 2020-11-07 01:57:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: eb488a57a072193f6dafd57f50b639ae SHA-1: 920a461fc51122259cf72ca220fb41c6b4e1627f SHA-256: cdaa0cfb0cfe40cf484ab9b05a1adb950a750381fb665f017fde677f73c0e4c8
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, indicating an attempt to lure the user to a malicious site. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a malicious intent, likely 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://traffking.ru/aws?keyword=mermaid+lagoon+candle In PDF document text
    • https://bojididiz.weebly.com/uploads/1/3/4/4/134493327/kawawajop-pajikovilupave.pdfIn PDF document text
    • https://zesopupejilit.weebly.com/uploads/1/3/0/7/130738861/ludumijafimuzopa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367301/normal_5f96628484df9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409417/normal_5fa2ef7a3fa4c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421944/normal_5f9f738465ada.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369505/normal_5f8fda9c5dd71.pdfIn PDF document text
    • https://jarapitoxedomel.weebly.com/uploads/1/3/1/4/131437170/majoratumapifen.pdfIn PDF document text
    • https://xamurifepugep.weebly.com/uploads/1/3/4/4/134484548/92959817c4cf53f.pdfIn PDF document text
    • https://zodebosamu.weebly.com/uploads/1/3/4/4/134444592/zitiroj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/463d0a54-bef5-42c7-9f66-5c83e853b2c5/wampler_tumnus_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94ba6126-dc9d-42c1-b6b3-2dabe35b7f7f/microscope_crossword_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4812a79-42f8-4cd8-b05d-414fd539a865/8930817202.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_off00004ded.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4DED 5084 bytes
SHA-256: 2039bc67981adf9b686db49851b315f1c85002d1534e5d051ade3e1ee996cdff
font_01_sfnt_off00005f2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F2C 10368 bytes
SHA-256: 4e9788a7e1f915c3a4c5a110ac8422630f309be2ffa757149b4826a5f2860c3c