Malicious PDF — malware analysis report

Static analysis result for SHA-256 94a9b98b5d2275c1…

MALICIOUS

PDF

79.4 KB Created: 2021-03-04 18:50:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 98d75b4335d6ab37ab3c594eeedc07b6 SHA-1: 8651958d2dbaa225fe1ec75973997705535857df SHA-256: 94a9b98b5d2275c1ccc47376149b568e9074591845a1b70d44b94016c718731e
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by both ML classification and ClamAV, flagging it as a phishing trojan. It contains a large number of external links, many hosted on disposable domains, indicating a link farm designed to redirect users to potentially malicious content. The presence of embedded URLs and the overall structure strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jottigo.ru/123?utm_term=mypin+ta4+wiring PDF link annotation
    • https://tonuvufew.weebly.com/uploads/1/3/1/4/131438708/nogavowuse.pdfIn PDF document text
    • http://jedusajinud.mygamesonline.org/33310984628.pdfIn PDF document text
    • https://gejiraje.weebly.com/uploads/1/3/2/7/132740564/4845561.pdfIn PDF document text
    • http://zokiwedilar.mypressonline.com/how_to_use_google_meet_in_google_classroom_youtube.pdfIn PDF document text
    • http://jozipuvuwuzaj.mywebcommunity.org/funukobumapefog.pdfIn PDF document text
    • https://xulijuba.weebly.com/uploads/1/3/1/1/131164032/9112015.pdfIn PDF document text
    • http://dewobazul.22web.org/nasal_cpap_neonatal_guidelines.pdfIn PDF document text
    • https://weralafopibobal.weebly.com/uploads/1/3/4/3/134338927/8972b1e12d6127.pdfIn PDF document text
    • http://gizigevom.mygamesonline.org/berlioz_symphonie_fantastique_2nd_movement.pdfIn PDF document text
    • http://nibajafij.medianewsonline.com/hp_elitedesk_800_g1_sff_network_drivers.pdfIn PDF document text
    • https://sijetuso.weebly.com/uploads/1/3/4/4/134499475/luluno.pdfIn PDF document text
    • http://dalifajebuxog.scienceontheweb.net/rujeseru.pdfIn PDF document text
    • http://juzezudusota.mypressonline.com/50696281291.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://87b84290-c0b3-4c73-97a1-3d59c64c3f69.filesusr.com/ugd/c638b7_0c500703322245d8a669baae9a930946.pdf?index=trueIn PDF document text
    • http://zizenatoxu.myartsonline.com/17050258776.pdfIn PDF document text
    • http://fomabobas.epizy.com/catalogo_3_avon_2019.pdfIn PDF document text
    • http://posikin.myartsonline.com/wigisixurujopirowe.pdfIn PDF document text
    • https://0503187d-52cd-4237-9521-a3cb9bf551ae.filesusr.com/ugd/5bb01c_5b0a6be4d2f24ec788d56f6f9e1e9726.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tiniruru/38260802114.pdfIn PDF document text
    • https://8b2103c5-345b-48fd-98e3-f19c90c4efd0.filesusr.com/ugd/0e2875_e35e4790c6394a9ca1f7b57c4c8babf8.pdf?index=trueIn PDF document text
    • http://razanowonowut.rf.gd/inventory_control_spreadsheet_template.pdfIn PDF document text
    • https://s3.amazonaws.com/dukavunivifa/borivojofugumezewiwakuja.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_off0000f7c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7C4 5064 bytes
SHA-256: 68e9eaee59f1a24d6057018a3e9a459cbb9b2ec77af388cf079f4fe31b114bd9
font_01_sfnt_off00010940.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10940 11764 bytes
SHA-256: 541b300e7d9fc3d19f9c18d1c32d84fdcc2cccb921917aeb4d8f7be5a04a2f49

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