Malicious PDF — malware analysis report

Static analysis result for SHA-256 5eb5eabb8833cb9e…

MALICIOUS

PDF

101.1 KB Created: 2021-03-22 14:57:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 7a2a82e4f33071aab21b6025fc08c67d SHA-1: 0045b8d5773d1b571d8a3d975698eefe80734939 SHA-256: 5eb5eabb8833cb9ec7195e52e9f60072efc233ef982df389bbdee825567d97ba
126 Risk Score

Malware Insights

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

The sample is identified as malicious by ClamAV and an ML classifier, with heuristics indicating it contains external URIs and is part of a link farm on disposable hosting. The embedded URL, https://lozipotod.ru/wix?keyword=alejandro+chaban+yes+you+can, is the primary indicator of a malicious redirection attempt. No scripts were extracted, but the PDF structure and associated URLs suggest a phishing or malware delivery vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

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://lozipotod.ru/wix?keyword=alejandro+chaban+yes+you+can PDF link annotation
    • http://dosijefa.mypressonline.com/fumos.pdfIn PDF document text
    • https://cdn.sqhk.co/joduragenep/NNhhey2/11176915220.pdfIn PDF document text
    • http://vifezitenof.getenjoyment.net/can_i_leave_organic_chemistry_for_jee.pdfIn PDF document text
    • https://cdn.sqhk.co/sopofudefif/gRmHjek/kezojawetoxoniwunevetej.pdfIn PDF document text
    • http://rifimakegezibor.22web.org/zuxejurosoxatunexikupovu.pdfIn PDF document text
    • http://pinegobojefo.getenjoyment.net/52514132621.pdfIn PDF document text
    • https://cdn.sqhk.co/neganobasiwe/hhBVtij/chamak_kannada_full_movie_2017.pdfIn PDF document text
    • http://lirinevewafa.mypressonline.com/13925265093.pdfIn PDF document text
    • https://cdn.sqhk.co/zarepowake/hqsLvhf/86168953011.pdfIn PDF document text
    • https://cdn.sqhk.co/libegavezu/AF4LVia/playlist_hillsong_praise_worship_songs_2017_download.pdfIn PDF document text
    • http://siviveko.getenjoyment.net/wetajuzufenosiwi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/8aa89bd7-30ba-4633-b37e-a4429b44c5b3/zeninamimodulifoj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39ac2bb0-ccd8-4200-a90e-8dedd2210f30/bozosunowe.pdfIn PDF document text
    • http://tadabafilebe.epizy.com/position_of_the_day_playbook_by_nerve.com.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb9c0ad3-75fb-4a13-8f7b-290f1454833a/87053465531.pdfIn PDF document text
    • http://dutebowoxaj.rf.gd/apple_to_android_3._5mm_adapter.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/372255f0-effa-4ccc-8973-1afee0e76201/elder_scrolls_online_pve_builds_2020.pdfIn PDF document text
    • https://c78ffd2e-fc3d-4272-86ca-968d835fb7ad.filesusr.com/ugd/0f9ef0_67cb069a5c104aa88cb344ef65a0dbb4.pdf?index=trueIn PDF document text
    • http://dafuwinev.myartsonline.com/5810529813.pdfIn PDF document text
    • http://wulibazosuxib.onlinewebshop.net/the_language_of_composition_2nd_edition_online_free.pdfIn PDF document text
    • http://fogokenum.onlinewebshop.net/livre_bescherelle_conjugaison.pdfIn PDF document text
    • https://75e6061f-eb7a-4ce8-b546-077bf96366c3.filesusr.com/ugd/2dfd19_194670a284404b32afc7d582ed2785c8.pdf?index=trueIn PDF document text
    • https://6d251753-49d0-4f5b-a278-10ed1cacc9d0.filesusr.com/ugd/5c139a_fc53e344da7045768d8e7530f6a25222.pdf?index=trueIn PDF document text
    • http://samitis.rf.gd/how_magic_candle_works.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014137.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14137 5088 bytes
SHA-256: 6c658fc2826775f373ccd3ff62b2aea33db7cb31c48a32334739b5c349ee24b8
font_01_sfnt_off00015279.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15279 11116 bytes
SHA-256: ef11edc57800e6fc8643ca99ecb7210076cd1caf58ad60c139755e46a4753376
font_02_sfnt_off00017753.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17753 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f