Malicious PDF — malware analysis report

Static analysis result for SHA-256 83697ea64f899676…

MALICIOUS

PDF

68.9 KB Created: 2020-12-22 07:05:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: ac20f7061b2b6878fa4cb35e381bcf49 SHA-1: 771385bcf06ff0d204840dd195f87be14f2d5f45 SHA-256: 83697ea64f899676bf98bfff1e3f328ab66d073b467e8b5db1ac26aab48f2aa4
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 0.9998

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://trafffe.ru/wb?keyword=hepatitis%20symptoms%20liver PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4390641/normal_5fc95c0b4254e.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/2e8bffaa-fdea-49b6-80a3-8fc049f3056f/risigakajabir.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbfd3c824b06a7eb3f8da22/t/5fc35dd64f983757204aa351/1606639063013/generalized_power_rule_tutorial.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19cdce56-71d3-4c6a-b2f3-1ef5f5140745/supernatural_script_pilot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/109534de-5422-41b4-aa07-8dde64e8d9b8/6384112642.pdfIn PDF document text
    • https://s3.amazonaws.com/kelukakeb/energia_biomassa_vantagens_e_desvantagens.pdfIn PDF document text
    • https://s3.amazonaws.com/wuniku/50995377530.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad244894-3b4f-48a8-beed-47bf34e467dc/mtv_guide_pro_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16d6a706-c639-483c-9cae-059058951636/liduvavewisu.pdfIn PDF document text
    • https://s3.amazonaws.com/janodojivi/97556250895.pdfIn PDF document text
    • https://s3.amazonaws.com/bugutaj/xafitovirufotaxawubovi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7664a09-6e89-4aef-89c3-4d39a7595f55/2775552030.pdfIn PDF document text
    • https://s3.amazonaws.com/rebesudanolo/papa_s_games_pancakes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca4c7c56-4bce-49d8-900f-30ccf48c46b7/vigevunifebero.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee7bac15-9215-4786-8892-791597afb6c7/kidiziru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/889c7ae3-8cf1-4815-b84e-0bb59d947ab5/73037237456.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

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_off0000c605.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC605 4768 bytes
SHA-256: 9c84fc24db4e8951fe7e77eaacc7c32926e6e68d0403e6c83d9932e424de5962
font_01_sfnt_off0000d63c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD63C 10080 bytes
SHA-256: 80a0edc6854f7255d8db680b89dfd17504cd8bd4d9c2ded2f9e05efc7d49d2f6
font_02_sfnt_off0000f8ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8BA 4324 bytes
SHA-256: ad623bc7c681097dfa1224999cf6cc6072d3ca9a137655dc1129b0261f0b357c

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