Malicious PDF — malware analysis report

Static analysis result for SHA-256 004697348069b4bf…

MALICIOUS

PDF

45.5 KB Created: 2020-10-14 15:42:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 8f3461e968a7fcb55668f5ddba069ae9 SHA-1: 7f81a5fdcac9405ffc31b2d75f900138cde05b13 SHA-256: 004697348069b4bfa5034c8d0b828992dec80a9f15a88f5d51715bf0cf3c0577
94 Risk Score

Malware Insights

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

The PDF document contains a link that redirects to a known malicious URL, disguised as a free download for an Android application. This indicates a social engineering attempt to trick the user into visiting a malicious site. The ML classifier also flagged this PDF with high confidence.

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=free+download+facebook+app+for+android+apk In PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/32e063a95e.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/7904132.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/665612.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/7922058.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/e5bcd2697.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/4e0d994f.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/novovuxosijuzuz_wofabunutigepuw_dugulelura.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/8980310.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/588b54e2-9bef-47c2-9146-933bf94f98f5/40850504764.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63591911-ee59-46b7-9675-2b485f27f5cf/bekuwagoxalebe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/921e2b9d-1804-4798-a275-fceb8e3f575f/18618254215.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1166c6a4-aafa-4aee-944b-50df4f8fa97f/10145763801.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd10aa09-a348-4db0-8438-25478fbe8983/93415768520.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/411030ea-bddc-410a-b82d-4c12a8dd1b50/57704909415.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_off000073cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73CF 5224 bytes
SHA-256: 088fbf9219a3f64cded3d252a1d563dadcb5c8bbd24583c570512f93bb1e2008
font_01_sfnt_off000085b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85B4 10420 bytes
SHA-256: f695a5bbc28686d953141eb9220b0aba8498fe7c25f847831c2e873a0b9b4908

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