Malicious PDF — malware analysis report

Static analysis result for SHA-256 9981946122776d9d…

MALICIOUS

PDF

68.7 KB Created: 2020-12-04 00:27:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 69f7dc454d4200a7814392747d3bbcab SHA-1: 4b320c78a0727bf4df76d91de9ed96452056dc20 SHA-256: 9981946122776d9d0b5fc975b9f3698e8a126bad5bb542f1d11191646434c5ef
162 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ggtraff.ru'. This URL is presented within the document body, likely disguised as a download button, to trick users into clicking it. The ML classifier also strongly flagged this PDF as malicious, and ClamAV detected it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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://ggtraff.ru/wb?keyword=bridge%20to%20terabithia%20book%20pdf In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/03c7efa9-e77d-49ee-a9f4-61eec1c9ec37/wutasirelesetositalod.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc27efbcd1e280355de4c09/t/5fc7dd5fd9e12858b406cae4/1606933855556/2030098128.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2004e81b-50d5-46ff-a246-b326de0769eb/lawofiji.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibudasagas/android_one_vs_android_go_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/vibuvomomuv/what_is_mbq.pdfIn PDF document text
    • https://s3.amazonaws.com/xupimaral/get_mime_type_bitmap_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74dfffe9-636f-40de-bfa4-bf3958b54c1d/62453842213.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b91f8d43-629a-46ff-858d-f56d72aad72e/35577859990.pdfIn PDF document text
    • https://s3.amazonaws.com/wusone/botunamurorokojijokutid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f64dc62-d9d3-4c27-8a59-4251bb5eacbf/devulewalikotuwox.pdfIn PDF document text
    • https://s3.amazonaws.com/lurutopobi/6297866617.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 2

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_off0000cfd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFD4 5344 bytes
SHA-256: 7281a7102dd574bd15ebacb2aaa141402cf1e2d19868d0bd239264e4cbdd4add
font_01_sfnt_off0000e1fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1FA 10448 bytes
SHA-256: 89b68de12603c94cc853991e19e0ce08151f159e70101583fc2ed7867853f578

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