Malicious PDF — malware analysis report

Static analysis result for SHA-256 9eae70ad725bdd03…

MALICIOUS

PDF

42.2 KB Created: 2020-11-04 14:52:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 57bb392ded6ab230057ec38573047078 SHA-1: 9bef163981574270c4e7c890867099925471b224 SHA-256: 9eae70ad725bdd034f08bcfcb450db74cb9dcd9febb77cac85c23a66b0954b4b
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://ggtraff.ru/strik?keyword=shadow+hills+high+school+california In PDF document text
    • https://xazojitov.weebly.com/uploads/1/3/1/4/131408465/8873362.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418556/normal_5f9602ce8db06.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/6b4e3443-96a3-44bd-85c5-c0b7980b0e81/zugaketuvosimujinakujabe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bdb2cb48-526c-48da-b08e-f06ca9965cd0/gbf_grid_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8c78dd2-39bc-403a-9c2d-b08810d0aa57/shimano_manual_service.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8000e40b-962f-440e-985b-1ba55797f72c/kekonat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c77a152c-b751-4cf3-802c-c3238d112de2/88213942118.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb449dab-df05-4e0c-838b-bb18d8202dd5/41560971.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39cb61e1-545b-472a-8e28-713ee252c7e8/92526060473.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9bd1619-1f6e-4144-88cf-0352aa2f8e21/runakogulesiweraderurige.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4930507d-0967-495a-8578-6de84a258d85/minecraft_heart_jars.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/601ddffb-a234-4109-9498-25fa0e9ebc85/cartesian_coordinate_plane.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98934300-7182-4d08-922d-7af6fd61b507/86338153771.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_off0000635d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x635D 5480 bytes
SHA-256: cdc562672fa07e34f5de533f576458c8f45d5330e11c02b32a5c7fe280d33382
font_01_sfnt_off0000760e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x760E 11216 bytes
SHA-256: 077b4d55efdca68fb84dae304fbf883678f2de5920163a9b5d4a080b2cb4d4d0

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