Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a9b1333de307bbb…

MALICIOUS

PDF

269.8 KB Created: 2020-11-16 21:22:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 48e5f8a2d063c0c9dea7297af89ebc6f SHA-1: 20196850b3833ecb08fcf5ec92aa3872eabd8aaa SHA-256: 5a9b1333de307bbbe76b1475922114256e6974233fe97dd339d12ef72548d1ca
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 0.9941

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://trafftec.ru/strik?utm_term=can%2527t+hold+us+lyrics PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4365562/normal_5f9f85630dd7f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408340/normal_5f9fa6a2eba1b.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/tomamujuf/terraria_pro_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47a83aba-1d30-4591-bf4c-3ae354bb9e33/84091379315.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5603517c-dc28-49a9-94be-aa22c70fe25e/rosujuzezipawopuzixefiru.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/field_guide_of_wilderness__rescue_medicine.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b9f2b2a-308d-457c-a0af-4b5edd2e476a/mazda_mx-5_miata_haynes_repair_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/gofilafixu/kaththi_tamil_movie_hd.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/650d84ea-936e-4e18-aebd-93fba839bcbe/68365465933.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3bf2a46-988d-4926-8005-f5287b900a09/mutawigixip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4de3bccd-3c8d-4e6c-ba33-f99c562862da/donkey_kong_unblocked_76.pdfIn PDF document text
    • https://s3.amazonaws.com/dazemi/jisewuvamudogilewep.pdfIn PDF document text
    • https://s3.amazonaws.com/gateme/44337005638.pdfIn PDF document text
    • https://s3.amazonaws.com/lijopavexanuse/74161150669.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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00025fec.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x25FEC 115628 bytes
SHA-256: 99204c0026995ae3954bdf960a908c4adeab1b31c7fd49411694163f9a1871b3
stream_006_off0003f078.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3F078 32728 bytes
SHA-256: 6e02579aa33877d4bc41eec3e7ecf91ef411698bb21a5c771a33c55a014da801
font_01_sfnt_off0003b6d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3B6D2 5068 bytes
SHA-256: 1493ca829ddedb0f82e3090f3c9f9b46eab153bf8956a7029e3e9b73dd8a9616
font_02_sfnt_off0003c811.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3C811 12312 bytes
SHA-256: f6bf26b62f17980e2f45c76e283db4b55eff6d271dc05d9dc57f348eaec0912c

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