Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a303ba6555765e9…

MALICIOUS

PDF

84.1 KB Created: 2021-03-05 04:34:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 1e3c26297562afb9e756885b707961eb SHA-1: 8408800cfb1638fddb1659e6c931b2d4bc2da214 SHA-256: 2a303ba6555765e9832de524b0099ca313018f9da3684f62058434ff40434985
186 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many pointing to disposable domains, suggesting a link farm or phishing attempt. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and numerous external links are indicative of a malicious document designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://maypoin.ru/strik?utm_term=reboot+with+joe+10+day+meal+plan PDF link annotation
    • http://zizodoroluxonaf.sportsontheweb.net/senilopomu.pdfIn PDF document text
    • http://xorabawik.medianewsonline.com/20332983732.pdfIn PDF document text
    • http://nigoguno.scienceontheweb.net/zijavadixeluxiz.pdfIn PDF document text
    • http://wivuperafuzo.mypressonline.com/69607290371.pdfIn PDF document text
    • https://sikufotoxatufik.weebly.com/uploads/1/3/4/4/134458503/xerugikuname.pdfIn PDF document text
    • https://lozibojugor.weebly.com/uploads/1/3/1/0/131069840/wabiziz-wijugapove-gelofem-kuwego.pdfIn PDF document text
    • https://jiwuzutobaduf.weebly.com/uploads/1/3/4/8/134889186/ferofabejosevawekosu.pdfIn PDF document text
    • http://revilokepudidu.mygamesonline.org/31900813883.pdfIn PDF document text
    • https://jadomurujamum.weebly.com/uploads/1/3/5/3/135326923/fitab.pdfIn PDF document text
    • https://wetogukonitama.weebly.com/uploads/1/3/3/9/133997956/rakifimo.pdfIn PDF document text
    • http://wejuzofibab.medianewsonline.com/mevifiwezu.pdfIn PDF document text
    • http://retamos.mygamesonline.org/88703076329.pdfIn PDF document text
    • https://javumegibevi.weebly.com/uploads/1/3/4/6/134634398/92df18bd746.pdfIn PDF document text
    • https://gamidamivagug.weebly.com/uploads/1/3/5/3/135324690/a995520dd6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://3f9320ff-391d-49df-b192-c557e211a93c.filesusr.com/ugd/469aea_b17f07997a5143f586fcd146766f9aa0.pdf?index=trueIn PDF document text
    • http://wojibikifi.myartsonline.com/fawurefagiwifatisumozobu.pdfIn PDF document text
    • http://japamitafixe.myartsonline.com/61063287314.pdfIn PDF document text
    • http://wejajesenopezoj.onlinewebshop.net/who_invented_the_first_steam_train_in_victorian_times.pdfIn PDF document text
    • https://2791e1c6-719d-47aa-bdc5-1556df251b63.filesusr.com/ugd/7757c5_7fe3be4ca595448db6c2d894a42eeaab.pdf?index=trueIn PDF document text
    • http://segurixuzek.myartsonline.com/31739227932.pdfIn PDF document text
    • http://tiwatimab.atwebpages.com/how_to_fix_rowenta_commercial_steamer.pdfIn PDF document text
    • https://eb40363d-1d1f-4170-a897-f23f0f433116.filesusr.com/ugd/2a1429_4ece9d1bdc6945fb8cb35c047844f9ed.pdf?index=trueIn PDF document text
    • https://8a6b9437-e7f2-49d7-8c24-351b272aa67a.filesusr.com/ugd/b18e4d_116c8d544fd7465d9904e14b7aa98127.pdf?index=trueIn 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f2fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2FD 5324 bytes
SHA-256: 6fa50be74ff7cc32813e293e55d666ce8309369fdf09a64fc4c069d7abcfa6bb
font_01_sfnt_off00010500.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10500 1800 bytes
SHA-256: a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
font_02_sfnt_off00010d8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D8D 11420 bytes
SHA-256: 32361a389d03aed94a3caa2e30cd6105307cdd80df690014140b86822c231dde
font_03_sfnt_off0001346d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1346D 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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