Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d305beb74bbe029…

MALICIOUS

PDF

42.8 KB Created: 2020-11-07 02:17:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: be345948c716f236ead69b8fdca4b37d SHA-1: bbfde327190986f29f652d1b1abcaaf8f1d0e4b7 SHA-256: 9d305beb74bbe0291f9f3f7f833a3b5a90e576fd383ff81181c1e7c2774c08df
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://traffmen.ru/aws?keyword=dyson+am09+manual In PDF document text
    • https://vodipewelo.weebly.com/uploads/1/3/1/6/131637384/gataxipokoro_vugalutalolo_sulekede_jarusarowojon.pdfIn PDF document text
    • https://kavaxaxogemiren.weebly.com/uploads/1/3/4/4/134441995/kobejanilavodo-nidadagu-xonitanafa-sadetefegerude.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/resixexi/vaxipewiroxoleguginur.pdfIn PDF document text
    • https://s3.amazonaws.com/vufupu/31547503309.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0eb942d5-74f2-46f4-8c42-f670be35cac5/88038938780.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c4139ee-eb0c-4ee1-984d-bd789e6d9153/lekitapokewej.pdfIn PDF document text
    • https://wejogude.files.wordpress.com/2020/11/niwasegini.pdfIn PDF document text
    • https://s3.amazonaws.com/xedewofuretujo/roblox_nsfw_clothes.pdfIn PDF document text
    • https://sirilab.files.wordpress.com/2020/11/85425378100.pdfIn PDF document text
    • https://kotidudip.files.wordpress.com/2020/11/pinemojixapibiwejupaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27ffef19-7992-4a1c-9a47-88e3bb2ea9c0/rotukugumodusixulape.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b06a02f0-3627-4cba-8e23-8dc63bc8701e/datoboropebogol.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000055ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55EC 5132 bytes
SHA-256: fe2a8ca5c2277c1a74e14cd8085a538ee8f3fa3976b12d5772dddff4e26e8fe1
font_01_sfnt_off00006759.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6759 9792 bytes
SHA-256: 25dc9c053d4bad5f0e08c1d3574c08ffd8edc330e0da43edc9dcde2d9ee61f64
font_02_sfnt_off00008938.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8938 16140 bytes
SHA-256: 3f83bbfb2e03141a9083badfb1da6e2b1773f9aa6b1ed8f30fc2d392a5ee3553

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