Malicious PDF — malware analysis report

Static analysis result for SHA-256 191e0450339c8103…

MALICIOUS

PDF

86.6 KB Created: 2021-03-26 10:22:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 24dddc849012d352156734cd7f68b257 SHA-1: 271d17be9160212e78e77d8e57a32e9621f7628b SHA-256: 191e0450339c810365114142699ff6a1113a671c9e1c2effc59b8bf4f11ac283
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The embedded URLs and the PDF link farm heuristic indicate a strong attempt to direct users to malicious content, likely for downloading unwanted software or further malware. The document body, though heavily corrupted, contains keywords related to cracked software downloads, reinforcing the phishing and malware distribution intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://resalured.ru/wix?keyword=subway+surfers+london+cracked+apk+download
    • https://giretalude.weebly.com/uploads/1/3/4/6/134677333/lipelosawo.pdf
    • https://wufikaxom.weebly.com/uploads/1/3/4/8/134883002/cf08b.pdf
    • http://suvekitubexeso.getenjoyment.net/kevipomejiwaj.pdf
    • http://lebofawudire.mygamesonline.org/18883301328.pdf
    • https://zupudawuliwubil.weebly.com/uploads/1/3/4/2/134265939/nujiwiligumelujuzome.pdf
    • https://kazenoti.weebly.com/uploads/1/3/2/7/132740362/e547395.pdf
    • https://vunamesu.weebly.com/uploads/1/3/5/3/135324142/vifujesaxixanof-dizoroxutag-sumidesu-kijoxeweruvot.pdf
    • https://tumunuwixa.weebly.com/uploads/1/3/1/3/131384432/viliwuvazeje_pipofinujuri.pdf
    • https://cdn.sqhk.co/gebemiwisero/hgghijB/kumegaruxaxizedejune.pdf
    • https://vukumurumijolot.weebly.com/uploads/1/3/4/4/134433046/554377.pdf
    • https://cdn.sqhk.co/vutazekerubu/JjihgDs/nagubef.pdf
    • https://cdn.sqhk.co/gefisodir/agdjjXS/sipudefuguripatulutuzoze.pdf
    • https://cdn.sqhk.co/fegadosijete/OPdBZii/wolfquest_anniversary_edition_download_free.pdf
    • https://vidokabotofasi.weebly.com/uploads/1/3/4/8/134868814/9623388.pdf
    • https://cdn.sqhk.co/liminekaj/9jciaLQ/ziguparevobolafapujaxezar.pdf
    • https://cdn.sqhk.co/xomakonezema/dNJhdl0/31930093406.pdf
    • http://radogomi.mygamesonline.org/romeo_and_juliet_balcony_scene_analysis.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/840c55c9-6c7b-47ca-8b59-050b8ee72d02/can_you_have_a_curved_line_of_best_fit.pdf
    • http://xukokumo.myartsonline.com/algebra_2_pearson.pdf
    • https://uploads.strikinglycdn.com/files/6c45e321-acd6-4743-b052-d389c5312138/49192481275.pdf
    • https://uploads.strikinglycdn.com/files/2f225a6b-2397-445b-b9cc-fdbf0e7d9427/35225247492.pdf
    • https://uploads.strikinglycdn.com/files/d8e0c486-bd25-4399-b6f0-fab182c95fc5/sozilasilesuvifosometa.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f2d6.bin
0ada739158f99a3a0ba780700ece74740655a2d9aad2228ce22d90a64e19a20a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF2D6 5652 bytes
font_01_sfnt_off0001063c.bin
97a68b74fa38577c99c3a22bd2795801651b83bf21bac64e76196ee36ab05f47		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1063C 21716 bytes
font_02_sfnt_off0001372e.bin
39b2f4b99ee08965fd4836f89f628a00cde8346cb181131bba0308e80db8fb67		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1372E 16092 bytes

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