Malicious PDF — malware analysis report

Static analysis result for SHA-256 38fd47e5c294490e…

MALICIOUS

PDF

69.5 KB Created: 2021-03-01 09:58:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: ede8c0ce1d6b8893b183a40f22e4900d SHA-1: 907dd0b2a3719d4326bae20ce5e67a7f52b1611c SHA-256: 38fd47e5c294490efc8d5b8ac37f8bf0904fd525d364d376079f362275196335
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to disposable domains and are flagged as potentially malicious or unknown. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The presence of external URIs and the link farm heuristic suggest an attempt to redirect users to harmful content.

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 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://druttle.ru/award?keyword=wu+tang+saga+episode+10+song PDF link annotation
    • http://wuxetij.mypressonline.com/80787077908.pdfIn PDF document text
    • http://juzajikadig.22web.org/22398199601.pdfIn PDF document text
    • http://vashe-zdorovie.xyz/ginatojelodtf6lq.pdfIn PDF document text
    • http://sawemawe.mywebcommunity.org/5865523659.pdfIn PDF document text
    • http://tafuxasomup.getenjoyment.net/riduzijewugat.pdfIn PDF document text
    • http://nijaxubazaziw.mypressonline.com/37993146327.pdfIn PDF document text
    • http://katipef.medianewsonline.com/gate_2016_marks_vs_rank_ee.pdfIn PDF document text
    • http://wdd13.ru/interline_1064_datasheetj4wcb.pdfIn PDF document text
    • http://pofuxubilet.sportsontheweb.net/boy_scouts_of_america_v_dale_majority_opinion.pdfIn PDF document text
    • http://nenonazuf.scienceontheweb.net/braun_series_9_bed_bath_and_beyond.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tevefetilojas.atwebpages.com/harry_potter_and_the_goblet_of_fire_book_synopsis.pdfIn PDF document text
    • http://gozenabuzixi.onlinewebshop.net/wojukimevevowosu.pdfIn PDF document text
    • http://wumugajus.onlinewebshop.net/fefanofaneg.pdfIn PDF document text
    • http://pesusakosu.rf.gd/intermatic_lamp_timer_instructions_model_tn300.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_off0000d553.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD553 5204 bytes
SHA-256: 90f187465ae0a3535068955a4e63641054517e1ac09495f0eec699ad4e4169f8
font_01_sfnt_off0000e72c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE72C 9968 bytes
SHA-256: 20a1e3d94b74111e178b00e71b044fd280e1789c358b0603dfb62af2f8c55879

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