Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc02244d54a30a82…

MALICIOUS

PDF

73.1 KB Created: 2020-11-18 15:17:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 6a3cd2dca575df89923763e7f4488694 SHA-1: 1054aacde00fe0b3860c985f97984ea533fe0c71 SHA-256: fc02244d54a30a82757867174124829f02d4b6e486c20f3eaf81c477f386e75c
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://traffset.ru/aws?utm_term=history+of+black+friday+slavery+pdf PDF link annotation
    • https://vilomaranetuxer.weebly.com/uploads/1/3/4/5/134502128/6552450.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366376/normal_5f8717442ccae.pdfIn PDF document text
    • https://lesajevix.weebly.com/uploads/1/3/4/3/134318042/8ccc571.pdfIn PDF document text
    • https://melegejisud.weebly.com/uploads/1/3/1/3/131379421/9663117.pdfIn PDF document text
    • https://pinonomobeberex.weebly.com/uploads/1/3/4/3/134318871/mefalapuver.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://s3.amazonaws.com/xesigeze/softrock_sdr_software.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8a17747-9fc7-4508-977a-421e160429f0/22703794857.pdfIn PDF document text
    • https://s3.amazonaws.com/fovezewi/95624562804.pdfIn PDF document text
    • https://s3.amazonaws.com/bofake/33704037307.pdfIn PDF document text
    • https://s3.amazonaws.com/wunupalezozerud/32409967799.pdfIn PDF document text
    • https://s3.amazonaws.com/wisuw/brushless_alternator.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e68377c-e9f4-466d-8a9c-f4c84bcb6515/92231870136.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_off0000d1f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1F2 5156 bytes
SHA-256: 66e63162a3b6826d09a28f7c308c9ea7c82a8c3e0978a6eed04492fc571d7864
font_01_sfnt_off0000e396.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE396 11152 bytes
SHA-256: 27dcacaafc368f95e572c18d8bf17220007553dc0fb530c9b30aa8e0c53e228d
font_02_sfnt_off0001097d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1097D 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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