Malicious PDF — malware analysis report

Static analysis result for SHA-256 034642faa5d931a9…

MALICIOUS

PDF

80.2 KB Created: 2021-07-06 23:37:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: e453c4fc48a5248337bb33bd9c486a57 SHA-1: 0dd07ea0eeef338a57a8bff9738f5edf7a904392 SHA-256: 034642faa5d931a9978cf5f05d28bf1566871254871b5b0a4f90fc99d971e249
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating it is likely a phishing or malware distribution lure. The document functions as a link farm, containing numerous embedded URLs that point to compromised WordPress upload directories and other disposable hosting. These links likely lead to further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9949

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://oniceh.ru/uplcv?utm_term=pondering+over+the+quran+pdf PDF link annotation
    • http://www.gametimecatering.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c2c770e927a---fezozexidojizax.pdfIn PDF document text
    • http://maxtarget.by/ckfinder/userfiles/files/wujikuvidobawov.pdfIn PDF document text
    • https://lokmangal.co.in/wp-content/plugins/super-forms/uploads/php/files/13033151c3ee30e67816c56a96c9c46c/wuvutixuwogativekeje.pdfIn PDF document text
    • https://cargotavio.ru/files/file/50329480729.pdfIn PDF document text
    • https://stellabakingcompany.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077f3d111368---suwuvigituzubomin.pdfIn PDF document text
    • https://www.djluk.co.uk/wp-content/plugins/super-forms/uploads/php/files/v986q6mcplhgvrlgc1ldmmdp6j/vubemowigomegulel.pdfIn PDF document text
    • http://famillespourstarlight.ca/clients/a/a9/a9b42c05011d3bb27e7f7ec2ed30324f/File/23951970247.pdfIn PDF document text
    • https://prsnashville.com/wp-content/plugins/super-forms/uploads/php/files/91348ed9ce43c8305518a9f28784758b/naxuxutozez.pdfIn PDF document text
    • https://melz-feu.ru/upload/mubijeg.pdfIn PDF document text
    • http://plusbateria.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609673edbd50f---poxivo.pdfIn PDF document text
    • http://beloit1962.com/clients/8/83/8368a4f838dea3176655029ae9e337da/File/96887989234.pdfIn PDF document text
    • http://www.centralperdana.com/file/jodevikirizaniji.pdfIn PDF document text
    • http://www.radioemka.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091d341a6780---58941465270.pdfIn PDF document text
    • http://nyett.hk/uploads/news/files/xikojiwo.pdfIn PDF document text
    • https://rjiminfra.com/wp-content/plugins/super-forms/uploads/php/files/b727985635bf0e804c29a9066199bc21/vizuxi.pdfIn PDF document text
    • http://nfc-lampang.com/user_img/files/86742076922.pdfIn PDF document text
    • http://plusbateria.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b08178144b6---81248558910.pdfIn PDF document text
    • https://ctapigroup3.com/contents//files/kimawaxota.pdfIn PDF document text
    • http://stellamaris.cz/userfiles/nusafetakoxadijenikuko.pdfIn PDF document text
    • http://analogsys.com/uploaded/file/197334802260a03975a6061.pdfIn PDF document text
    • http://www.whirlpool-beachcomber.at/wp-content/plugins/formcraft/file-upload/server/content/files/160a910e338145---jivivuvorebiwada.pdfIn PDF document text
    • https://www.fecomerciomg.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608ae0a1cb201---55319033683.pdfIn PDF document text
    • https://abugfreemind.com/userfiles/file/likenufevipedifafoxugigo.pdfIn PDF document text
    • https://www.sudburyhighspeedinternet.ca/wp-content/plugins/super-forms/uploads/php/files/11ac9f589a322ee475a13090b3dc8e8a/nalifedojugogofuru.pdfIn PDF document text
    • http://outspokenholland.com/userfiles/fckFile/20210523022514.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d4e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4E5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ecf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECF7 17580 bytes
SHA-256: c804d5f51719be087eeed05128cd171fd4cd583266cba277fc3df781ba05f3f2
font_02_sfnt_off00011aa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AA0 10876 bytes
SHA-256: 51c3a9a2e62c4c8fb903a893643f6a365f62311bf8cd7df347ba2883c9ee092a