Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2220b0f6ca7a9f5…

MALICIOUS

PDF

82.9 KB Created: 2021-03-11 16:41:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: ba27449bb6951b5fcf16157dc8686df5 SHA-1: b8d684db9055af50238f41fb46d4234ecea9f667 SHA-256: a2220b0f6ca7a9f575745a27fb483cd1898a1dbb31e73654acb2f2a5af7b1400
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, flagged as a link farm, with one prominent URL leading to a suspicious domain. ClamAV detection and ML classification strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and link farm suggest it's designed to redirect users to potentially harmful content.

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
  • 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://soxebez.ru/award?keyword=livre+cours+anglais+pdf PDF link annotation
    • http://kitafoged.medianewsonline.com/zinugoramabasiduxekadilud.pdfIn PDF document text
    • http://laxelenokuro.22web.org/unity_3d_android_sdk_path.pdfIn PDF document text
    • https://cdn.sqhk.co/niramojiga/jhTjd6N/ben_10_alien_experience_app_apk_download.pdfIn PDF document text
    • http://pimifawimonidij.mywebcommunity.org/kanawexese.pdfIn PDF document text
    • https://cdn.sqhk.co/delojiwuguj/Qvgj0jw/death_invasion_survival_apk_obb.pdfIn PDF document text
    • https://cdn.sqhk.co/nomelafu/Bvk6jbI/44282581236.pdfIn PDF document text
    • https://cdn.sqhk.co/nogawevorus/WjbYTfr/sniper_elite_5_release_date.pdfIn PDF document text
    • https://cdn.sqhk.co/wemitupu/4idiiif/wipeout_3ds_review.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://c06d174a-caca-4ab2-b5a0-4525cd3135d4.filesusr.com/ugd/856cea_534ce8a695354a259eb1a9ef2f0432a6.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lopadivupudexa/26376104324.pdfIn PDF document text
    • https://s3.amazonaws.com/jivamubug/ajax_form_submit_php_without_jquery.pdfIn PDF document text
    • https://1ec9b6e7-17eb-4e1e-a994-ba5ce4cbdb7c.filesusr.com/ugd/d4a9d6_5b7fb4fc839e4144ac11c2ff4619441e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vawoginele/fipene.pdfIn PDF document text
    • https://1cf095b7-1d29-4152-b82c-7733cf7ba0c7.filesusr.com/ugd/c1de29_c3bee8becf1f4e2a8f6e3b9844b6e01a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tonemakopinibem/what_are_examples_of_direct_democracy.pdfIn PDF document text
    • https://fbaba6ab-37cf-477f-82bd-e10a416eccda.filesusr.com/ugd/3c8574_8faef78541604651a1260b85aa999218.pdf?index=trueIn PDF document text
    • http://laxunuwozen.epizy.com/zibepivawotapukego.pdfIn PDF document text
    • https://s3.amazonaws.com/pewibim/lupotedobalopomika.pdfIn PDF document text
    • http://dubanexotokegel.myartsonline.com/is_my_dog_allergic_to_peanuts.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_off00010338.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10338 5324 bytes
SHA-256: 5e07dec03f80eec2c688a9662e69c39037068de97424ccadb7d7c67d02d96da8
font_01_sfnt_off00011572.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11572 13004 bytes
SHA-256: 5d955ec1e5c70e538e0f6dd8130ab677c66fd1e687d312b08cc89db31680c658

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