Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a432096a287b8a5…

MALICIOUS

PDF

65.9 KB Created: 2020-11-25 06:40:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: db56c3562b90050c11eaf12f7c09755a SHA-1: 1457fec76b7446b329bb3f191aa84d08a04eb26f SHA-256: 7a432096a287b8a5747574259525c48e38293b679b5e65be56d8be6e3ba0fa33
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 0.9998

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://traffset.ru/aws?utm_term=apowermirror+for+android+apk PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4492588/normal_5fbb13e80b1f5.pdfIn PDF document text
    • https://mewopaxa.weebly.com/uploads/1/3/4/8/134848883/wolamadiwudij.pdfIn PDF document text
    • https://dorubirema.weebly.com/uploads/1/3/4/3/134317311/waxuvo-merize-pegibopesuber.pdfIn PDF document text
    • https://bawigadumifop.weebly.com/uploads/1/3/4/4/134494387/vaxatomekafenovot.pdfIn PDF document text
    • https://dojufewuwi.weebly.com/uploads/1/3/4/2/134235401/5d3a829ed3014.pdfIn PDF document text
    • https://dujizozobalosu.weebly.com/uploads/1/3/4/4/134470010/a607b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407327/normal_5fb2a087050ee.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/xajowu/vtech_phone_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/najipavez/antonio_gramsci_political_thought.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2f2c349-a8c0-43cd-897f-f08551a3c32e/vajusinuxesopokesedunag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7fdaf641-7781-475f-93f5-9c03cbba3cf4/xuxurevalaraxuxutagibus.pdfIn PDF document text
    • https://s3.amazonaws.com/vajefam/29754523710.pdfIn PDF document text
    • https://s3.amazonaws.com/muvarelo/75520795985.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c41b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC41B 5124 bytes
SHA-256: 65d43e4d30de6bedd43b4ef59e7a2ef278839fb93895a7df337a701d6bcdb402
font_01_sfnt_off0000d58a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD58A 11660 bytes
SHA-256: d439d42d40862f71382a381fdc940e7df1d8752f413f9a6d6227cc369449c28a

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