Malicious PDF — malware analysis report

Static analysis result for SHA-256 392a72b92c85a372…

MALICIOUS

PDF

76.4 KB Created: 2021-03-18 22:46:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0eb3006bfc4e3797bba022ac4b92604e SHA-1: 1ccf121e45e6d79bf1bc3cdf016330dd53b00434 SHA-256: 392a72b92c85a3720462ab08e0ff329f7d937f5b526772e4c38f98e81f3d8b88
156 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various PDF files. The primary URL, https://maypoin.ru/award?keyword=participe+pr%25C3%25A9sent+et+adjectif+verbal+pdf, suggests a potential phishing or spamming campaign. ClamAV detection and ML classification further support its malicious nature, indicating it's likely a phishing or trojanized document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/award?keyword=participe+pr%25C3%25A9sent+et+adjectif+verbal+pdf
    • https://static.s123-cdn-static.com/uploads/4449187/normal_6009010e8721c.pdf
    • https://static.s123-cdn-static.com/uploads/4410447/normal_5fc5a249a9dd8.pdf
    • http://xamoxipuwizutux.scienceontheweb.net/monster_in_law_2005_english_subtitles.pdf
    • https://cdn-cms.f-static.net/uploads/4412391/normal_5fd94c2d921c5.pdf
    • https://zibomuloxeju.weebly.com/uploads/1/3/2/8/132815028/775598.pdf
    • http://xemakaze.mywebcommunity.org/what_was_the_theme_of_the_yellow_wallpaper.pdf
    • http://lusuwivaw.medianewsonline.com/traductor_de_documentos_de_aleman_a_espaol.pdf
    • http://lezigovedavide.getenjoyment.net/jocko_willink_50_rules.pdf
    • https://kekuxepepave.weebly.com/uploads/1/3/0/7/130739312/7384789.pdf
    • https://lidoporovumo.weebly.com/uploads/1/3/4/5/134506542/nuzotopatuwunim.pdf
    • https://koponabunabo.weebly.com/uploads/1/3/4/5/134520941/gopinitajozegor.pdf
    • https://cdn-cms.f-static.net/uploads/4448330/normal_5fd62ad11b935.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/waduzirader/jinja2_template_injection_rce.pdf
    • https://s3.amazonaws.com/dagasopones/sedunetopajelo.pdf
    • https://s3.amazonaws.com/xovekolamoxe/fire_and_blood_hbo.pdf
    • https://uploads.strikinglycdn.com/files/3aa4559e-4079-4cbb-86b7-3eedb9678b01/dell_wd15_dock_wont_power_on.pdf
    • https://s3.amazonaws.com/babetafaperaxov/liftmaster_8355w_reviews.pdf
    • https://s3.amazonaws.com/desenaz/zusobufowelatokomamitevod.pdf
    • https://s3.amazonaws.com/gogonof/57418368393.pdf
    • https://s3.amazonaws.com/sejakopa/answer_synonym_solution.pdf
    • https://s3.amazonaws.com/fopalew/due_diligence_clause_template.pdf
    • https://uploads.strikinglycdn.com/files/e1646e61-c181-4aea-9d92-edcd0181e87f/the_dhandho_investor_book_price.pdf
    • http://litorow.myartsonline.com/meeting_attendance_sheet_template.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e780.bin
7b8040dde600e0498056d25336c98dd445d4e532599290a5a1510978824683f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE780 5568 bytes
font_01_sfnt_off0000fa42.bin
d73b76de447657af96a2f783024c5a33ed49fec7398fdb22f696a844d43679b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFA42 12444 bytes

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