Malicious PDF — malware analysis report

Static analysis result for SHA-256 6386f1bd3b544d3b…

MALICIOUS

PDF

44.3 KB Created: 2020-11-07 07:23:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: d2e75d2ef02957d9cd584b023bd9a88b SHA-1: d86bfe2581e44da656b1528c9d00ec6f7e228f6f SHA-256: 6386f1bd3b544d3b67d274f957ad45e28b786e83bb2e502c62808798e876db7d
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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=michigan+hunting+rules+2020+2021 PDF link annotation
    • https://mugekezozo.weebly.com/uploads/1/3/1/6/131636766/salusenozo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417669/normal_5f974019ce9d5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417670/normal_5f9a09decca2b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382778/normal_5f91869b0d12f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371812/normal_5f8b71b530dcb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367959/normal_5f93ee37a0bfc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453908/normal_5fa48501bf635.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375358/normal_5f92d1e27fb22.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378853/normal_5f959ca601553.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454432/normal_5fa60b48d084d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/9edb2f1e-02bc-4215-9dbf-575dbaf28f74/44304815341.pdfIn PDF document text
    • https://beziduxonet.files.wordpress.com/2020/11/vomufepikarigutap.pdfIn PDF document text
    • https://tinogive.files.wordpress.com/2020/11/jedutajagin.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F6C 5164 bytes
SHA-256: 05db9dfd4ecc51378c5137b49d9db2553e81f1cb0d8fb163447394d38070a7b0
font_01_sfnt_off000070f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70F2 11064 bytes
SHA-256: 44ea7573e453581922a6a0d37a8f84c7211935c5e73f0c1979ac0ec083f1078d
font_02_sfnt_off0000960c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x960C 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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