Malicious PDF — malware analysis report

Static analysis result for SHA-256 17278ba3f50b5b4f…

MALICIOUS

PDF

75.1 KB Created: 2021-03-16 10:15:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: b37e72fc3a8a908d07d6e87ceedb5f26 SHA-1: 5fe7b41b384cb930667339248abf1be7629cbb13 SHA-256: 17278ba3f50b5b4f3ac4bbbad1999455113861397068af565c770360aecce071
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://dugedepap.ru/wix?keyword=happy+wheel+demo PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4372076/normal_60068e372e877.pdfIn PDF document text
    • http://taforojujutusig.mygamesonline.org/mini_14_vs_ar_15_shtf.pdfIn PDF document text
    • https://finaxapiw.weebly.com/uploads/1/3/5/3/135301963/0d8e8130346.pdfIn PDF document text
    • http://xoroketogejuxe.mywebcommunity.org/78678679148.pdfIn PDF document text
    • https://rolowuwojudazap.weebly.com/uploads/1/3/5/3/135302881/moxotul-timejudipisep.pdfIn PDF document text
    • https://jomefexud.weebly.com/uploads/1/3/4/7/134732593/512b0ebe640.pdfIn PDF document text
    • https://lowunipuso.weebly.com/uploads/1/3/1/4/131453219/2590237.pdfIn PDF document text
    • http://jigikujed.scienceontheweb.net/beginning_violin_exercises.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410988/normal_5fe52a380d0f2.pdfIn PDF document text
    • http://zofoxexizoviro.iblogger.org/37471098696.pdfIn PDF document text
    • https://xoxigukot.weebly.com/uploads/1/3/4/8/134861038/nezoko.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497368/normal_602f3d37955b9.pdfIn PDF document text
    • https://xudubuwar.weebly.com/uploads/1/3/4/0/134041851/dodoxedorixo-fowopulamex.pdfIn PDF document text
    • https://fofezuse.weebly.com/uploads/1/3/0/7/130739341/minibevunevinilaluti.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421627/normal_5feb50d08cee7.pdfIn PDF document text
    • https://fologonalufofu.weebly.com/uploads/1/3/4/6/134694067/8191355.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lebasasasob.epizy.com/firefox_old_version_free_for_mac.pdfIn PDF document text
    • http://fosixokosed.rf.gd/xurakokodivexalekokeram.pdfIn PDF document text
    • http://fofifalog.rf.gd/jabarikamelipanokunuxes.pdfIn PDF document text
    • http://wumoxafu.epizy.com/60172509388.pdfIn PDF document text
    • http://gurimexuma.epizy.com/depupoto.pdfIn PDF document text
    • http://jofifabe.rf.gd/can_google_maps_timeline_be_wrong.pdfIn PDF document text
    • http://vedexokorixika.rf.gd/dudapepewo.pdfIn PDF document text
    • http://xafekejo.epizy.com/analysing_school_performance_dfe_sign_in.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e78f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE78F 5080 bytes
SHA-256: 4ee3caced55b1629467c0c64ce6d98a819c910476faa2a3ee94581831fac7702
font_01_sfnt_off0000f8cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8CB 11280 bytes
SHA-256: e333ce7ed10ed47a55776f3ebcd6c46559b093c1e4e0789617228c200a9cc21c

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