Malicious PDF — malware analysis report

Static analysis result for SHA-256 b95698dce195ec14…

MALICIOUS

PDF

35.0 KB Created: 2020-10-13 02:53:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: b4982256d9dfa58b089b2514cec065a3 SHA-1: 62ef9bf6970fbdd9f7b301ff8a529722046e758e SHA-256: b95698dce195ec14ba3ca91cdd9424b18f7a74fef850705bc830250061ddfe1f
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://gettraff.ru/strik?keyword=red+hot+chili+peppers+sheet+music+pdf In PDF document text
    • http://files.courtneyksteed.com/uploads/1/3/0/8/130874391/weronul.pdfIn PDF document text
    • http://files.virginiafilippousi.com/uploads/1/3/1/4/131454102/1052853.pdfIn PDF document text
    • http://files.meganeturney.com/uploads/1/3/0/7/130776567/2356942.pdfIn PDF document text
    • http://sufutoz.thinklearnact.com/uploads/1/3/1/3/131383664/4e8523579.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/4173547e-8977-40b2-84a0-26efabb1aed0/zumepobu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5321f7e-69ce-4729-aad9-eea733ea8daf/21658875605.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/406a6c8b-52e3-4c7b-b6f7-88ed8dfd615f/92573580051.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f07a64a-a4a4-4df5-9c33-9f1390070ca4/57883371772.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07a53bd9-b08d-4150-b5e4-564a0467aaa1/66399928670.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79f079b3-7463-4e25-9cb7-e981d253f5f6/muwakevakurovat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14bea686-af09-42d8-a158-1a3b541de024/71763412705.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d12736c8-5a5c-4242-a280-51fc759aa651/nevuzipexiwupikuraj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a54ac07e-2c36-429f-832e-4b40e0a3d037/mebasisivetotetogaxoter.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_off00004c83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C83 5192 bytes
SHA-256: 25a1a3abcfd121f7ea18244a372dff127a85e179a2a6e2dcef232775689e39d2
font_01_sfnt_off00005e0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E0C 9612 bytes
SHA-256: 614cb16b5c3fd39b5f4df4df2df442142878f034b7094e8c456a718a1341e530

Open this report in the interactive analyzer, or submit your own file for analysis.