Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ad9f18075fcbcb1…

MALICIOUS

PDF

62.2 KB Created: 2020-12-06 04:01:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 6515591d8c63dd8e2b698be4563f9475 SHA-1: b2edc861436270fd31a2d387a960a113a3b14066 SHA-256: 2ad9f18075fcbcb13fc426828a8c8f0e2233508d11386ddd82b3201588678e01
164 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristic 'PDF_SEO_LINK_FARM' suggests the document is designed to host numerous external links, likely for SEO manipulation or to distribute further malicious content. The embedded URL and the document's structure point towards a phishing or malware distribution scheme disguised as a legitimate download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://trafficel.ru/strik?utm_term=envision+math+grade+3+pdf+free+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4402706/normal_5f9eaa6833cbe.pdfIn PDF document text
    • https://toxoxazagole.weebly.com/uploads/1/3/0/9/130969938/98c9abef5eb616.pdfIn PDF document text
    • https://dixugoruvaweg.weebly.com/uploads/1/3/4/6/134616472/6440564.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423443/normal_5fa54dfb120d4.pdfIn 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/7f30d074-cfb7-43de-8121-e55cf54f3e67/voxomufekiwigigel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/24b87233-4490-4ea9-97fd-e79faeaf0668/xetowiguzimugapadafip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d85be67-4901-4f01-8a50-5b32566c7a7c/the_promised_neverland_isabella_lullaby_sheet_music.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdef0008845d09244f2c03/1606283008348/magicians_quest_mysterious_times_reddit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7a8fe12-ed8a-47d5-88a9-552dad391cec/2017_chrysler_pacifica_uconnect_headphones.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc28637c89e1c4b8fc8d350/t/5fc96a5ffbf8976b723abf0c/1607035487499/best_designed_knife_sharpener_america_s_test_kitchen.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b3ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB3AE 5728 bytes
SHA-256: 70bb07b6796657b6225ffa1bb54706762ca14fdf8bbf2089714dbb66716d9c93
font_01_sfnt_off0000c71b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC71B 11032 bytes
SHA-256: 0d6537565258eefb0e0bd6a32e76656d624b3523a1833e9f30f1bc71802729a4

Open this report in the interactive analyzer, or submit your own file for analysis.