Malicious PDF — malware analysis report

Static analysis result for SHA-256 e736aabd9eacd3d1…

MALICIOUS

PDF

78.7 KB Created: 2021-03-21 00:07:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 2ef7b228560502d09339f8ad3b14a5bd SHA-1: b8bfc3b31b63f33dce42920551d9b495f4df6695 SHA-256: e736aabd9eacd3d183f8c4728b0b39589b363258c13d284642931b37592b89de
156 Risk Score

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-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.
  • 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://druttle.ru/aws?utm_term=is+the+sims+3+still+being+updated PDF link annotation
    • https://bumobuzeki.weebly.com/uploads/1/3/4/4/134477779/dilokaf_veluteni.pdfIn PDF document text
    • https://sijalafad.weebly.com/uploads/1/3/4/8/134887162/wujaxugaxopa.pdfIn PDF document text
    • https://jevijoju.weebly.com/uploads/1/3/5/9/135978445/f023e3362cf74.pdfIn PDF document text
    • https://vutajavegev.weebly.com/uploads/1/3/4/0/134040502/67b4e9d556.pdfIn PDF document text
    • https://novifabapidujup.weebly.com/uploads/1/3/5/9/135975767/8bd1b7ff28c2.pdfIn PDF document text
    • https://zasubimivari.weebly.com/uploads/1/3/1/3/131383839/2027119.pdfIn PDF document text
    • https://lufeziwupidel.weebly.com/uploads/1/3/5/3/135345985/4791915.pdfIn PDF document text
    • https://gekibevuzoz.weebly.com/uploads/1/3/4/5/134503907/podiramim.pdfIn PDF document text
    • https://limuvowefegepud.weebly.com/uploads/1/3/4/5/134509231/vefogisu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://387a498e-9551-4239-9507-3183ba214552.filesusr.com/ugd/cd403b_5ac8e3c2b2984a8aaa8f8bed9e07f480.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sobaketemu/wuvedowobezeso.pdfIn PDF document text
    • http://zixugikel.rf.gd/cambridge_past_papers_free.pdfIn PDF document text
    • http://bapuwejotip.epizy.com/53698239582.pdfIn PDF document text
    • http://sajonagot.rf.gd/20209373365.pdfIn PDF document text
    • https://s3.amazonaws.com/bagisi/50229530537.pdfIn PDF document text
    • https://s3.amazonaws.com/dogazisuze/cement_wall_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/nakevoja/pevupojefivevasuxo.pdfIn PDF document text
    • https://8bd0dbf5-62e0-4684-a95a-1d9666dfa34a.filesusr.com/ugd/e71694_0b0e808d76f64145970b5fa14ea92828.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lupuvogotog/christmas_canon_piano_sheet_music_printable_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zibenoroduzuw/88756157759.pdfIn PDF document text
    • https://b3dfd9c9-1030-471f-a26d-814ea73dbccc.filesusr.com/ugd/d97afa_5189d6b757b5417e83a51fe33a8db590.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vipinib/10318022802.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_off0000f692.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF692 5520 bytes
SHA-256: b112c3112033460614e3162b249e637365771244a84e76f513ef2b4c8a081c28
font_01_sfnt_off00010926.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10926 10648 bytes
SHA-256: 060d658f7d61d17f9740cd0bee62be8b041018617d4f32bf9ab0ed915802f48e

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