Malicious PDF — malware analysis report

Static analysis result for SHA-256 168b060baeb8d66e…

MALICIOUS

PDF

76.0 KB Created: 2020-11-18 07:52:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 89a879df111ed8207dd8763e56ddfb1b SHA-1: ddfd6720f3ca2c6061242b11854d604aab8b19ae SHA-256: 168b060baeb8d66e64006491086b705964578716efe145114b0ee548465689a2
156 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 ClamAV and 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 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/strik?utm_term=bdo+best+accessories PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366987/normal_5fa20cd746e27.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375210/normal_5f9c8e4c85779.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366377/normal_5f8747c84e5ef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370266/normal_5fa3ed1d83363.pdfIn PDF document text
    • https://fojejebub.weebly.com/uploads/1/3/4/2/134265807/karirelanir-sutijewekikaj-xutojiwurodep.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370309/normal_5f925b52c3271.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/1fc5d111-0600-4bae-bff9-8e05f25c65a3/rapid_ekg_dubin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98642e08-db3d-4f47-8661-95e944a50861/lonixasebetutazadikepe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0ee6d1c-e06c-4a06-a03b-e45dd6966c42/28366143501.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f55c2424-d95a-40ea-963d-940b4ede2319/66279488673.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eae1d043-755c-452b-a8d2-0253000d025f/19845041993.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e16f5bc-d450-401c-9e06-950b28655ac5/vishnu_sahasranamam_in_kannada.pdfIn PDF document text
    • https://s3.amazonaws.com/wazorixekunafob/teguxadikolinififife.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_off0000d200.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD200 5092 bytes
SHA-256: afa1343b1f9752523e44f5f1007360984e12b1b09d5dd050be340cafbf5d0540
font_01_sfnt_off0000e359.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE359 12272 bytes
SHA-256: 3bd8aeef281358b2871e52e1e7ed7e027235c05743c99f9c99d3f944c399df28
font_02_sfnt_off00010db2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DB2 16376 bytes
SHA-256: f267a97a42ed964490c0c36cf8d24d30f5cfc386ee24850e75bb3a4991f11828

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