Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cc4410605b7fbce…

MALICIOUS

PDF

73.9 KB Created: 2020-12-27 04:54:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 02d1126ada9e85c3c5262b02d29d438c SHA-1: 96a1909f6acbf9e1834c078df7a03add4ea2ff27 SHA-256: 3cc4410605b7fbce3137d84f98ed8cac32530018e03c1c2b40374ea35e36d657
164 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous external links, with a significant heuristic firing indicating a PDF link farm. One of the embedded URIs, 'https://trafffe.ru/aws?utm_term=12th+time+table+2019+science+maharashtra', suggests a phishing or malicious redirection attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/aws?utm_term=12th+time+table+2019+science+maharashtra PDF link annotation
    • https://livadasim.weebly.com/uploads/1/3/4/3/134312527/9798831.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368479/normal_5fba3e1e49c29.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409813/normal_5fa76a279c33c.pdfIn PDF document text
    • https://sumadapovememer.weebly.com/uploads/1/3/4/4/134494733/1400155.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/susopuzupure/porurofilirisa.pdfIn PDF document text
    • https://s3.amazonaws.com/padadutiseni/roblox_download_unblocked_free_install_pc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5ef000b-3f7a-4d6f-965a-587033483481/bakalalutisidatur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8906196b-e3ad-4915-82c3-3d035085d801/riwikifog.pdfIn PDF document text
    • https://s3.amazonaws.com/widuxade/we_will_judge_the_angels_kjv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d60732d-9675-4c6a-9be5-b445e09377a7/81280967324.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76cc175b-b61a-42b1-b95a-af3ae70eaf06/fofokuxogubux.pdfIn PDF document text
    • https://s3.amazonaws.com/zemunomipazikez/rokijuzisuxa.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_off0000e07c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE07C 5564 bytes
SHA-256: 38d12451823d6bcf08e8f4c7e904831111ddaf7acf319f900cb84ba01814be9b
font_01_sfnt_off0000f339.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF339 11772 bytes
SHA-256: ff3acb231e4107c3f9e2dac89dace16b20907d1b98f200ac9bc48f6cb0c594dd

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