Malicious PDF — malware analysis report

Static analysis result for SHA-256 11f89486ed90b238…

MALICIOUS

PDF

65.6 KB Created: 2020-11-22 00:45:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: e8508fd65565886f884e5e5ba1bacc6a SHA-1: 96c6e957206a10e16772e226aef12db87de3087d SHA-256: 11f89486ed90b238916e3e9ed03b892108b561b9965b28541c281278964787d9
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 ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://trafficel.ru/aws?utm_term=linus+and+lucy+theme+piano+sheet+music PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4380869/normal_5f928e4311483.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474977/normal_5fa52a8905943.pdfIn PDF document text
    • https://zimiduninu.weebly.com/uploads/1/3/1/6/131637103/6026554.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381980/normal_5fab83ce6892b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461219/normal_5fb5fbc82d97f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459059/normal_5faee670e9240.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/8c62a83b-5118-4c5a-9d6f-993eb2307624/fall_of_the_samurai_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4286b438-87af-4d9e-915f-db1c28008248/zipilezekiwewotareleri.pdfIn PDF document text
    • https://s3.amazonaws.com/bojafazes/28155561033.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3db1db5d-c139-455a-9c4e-62547935d9d5/sndrome_de_la_borrachera_seca_alcohlicos_annimos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11e93b87-6cc2-48a3-8cdc-d2879f2f2d84/fumurob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2163e211-da1f-440d-98c2-b0797135434f/fevusekunisem.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 3

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
stream_004_off0000dae9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xDAE9 18536 bytes
SHA-256: 803340b1edc5c6106b6c4bb8e246becbe361850e948cf90b67184bc2b973ef05
font_00_sfnt_off0000a808.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA808 5260 bytes
SHA-256: efcff97a15df654a7364bfb500f0c622fa0f2d9035616922b1ea147ec958169c
font_01_sfnt_off0000b9d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB9D4 9756 bytes
SHA-256: d0fd15cfd949daf5e640c3bada6e53ddf6888ecc8e3d34db86865f787341cfc8

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