Malicious PDF — malware analysis report

Static analysis result for SHA-256 a189930444421fc1…

MALICIOUS

PDF

93.3 KB Created: 2021-07-15 12:14:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 47436cdec8cefe33097ff1201302a5f2 SHA-1: 6a829a9e240a3bc2708a9b7d7599fa2a3e2c3545 SHA-256: a189930444421fc1ac94b4ead466bfb830999ef84cea72ec4f0d39d032d36f60
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, directing users to compromised WordPress uploads and disposable hosting sites. The embedded URLs, such as 'https://inwebjor.ru/uplcv?utm_term=max+level+dino+ark+official', are likely used to distribute further malicious content or facilitate phishing attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://inwebjor.ru/uplcv?utm_term=max+level+dino+ark+official PDF link annotation
    • https://rhagro.com.mx/wp-content/plugins/super-forms/uploads/php/files/66f0bc2f9e38edcbf552f83ed4b0ca75/81284154837.pdfIn PDF document text
    • https://samiznojmo.cz/wp-content/plugins/super-forms/uploads/php/files/a0c1df93b2aaafaead995c65a287b112/94547648417.pdfIn PDF document text
    • https://maxim-catering.de/wp-content/plugins/super-forms/uploads/php/files/vp6lf8pa588a3hg6ltjnq8n2s4/zitag.pdfIn PDF document text
    • http://getawaynewzealand.co.nz/wp-content/plugins/formcraft/file-upload/server/content/files/160a02eddcfd5f---1334434090.pdfIn PDF document text
    • https://postscriptproductions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160eff64595941---kuniriwezuzutafuf.pdfIn PDF document text
    • http://stroynerud-sm.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1607c91fb96312---22850090727.pdfIn PDF document text
    • https://www.amiunaorchestra.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16093330e79bb8---lupij.pdfIn PDF document text
    • https://refundsrefunds.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083d4fde8304---32091057880.pdfIn PDF document text
    • http://xn--80akij1ajew.xn--p1ai/wp-content/plugins/formcraft/file-upload/server/content/files/160abfca67b8e3---18346410818.pdfIn PDF document text
    • http://ricarda-allegra.de/userfiles/file/xovizerusikurofuk.pdfIn PDF document text
    • http://2girlstrippin.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085548840037---kerefefi.pdfIn PDF document text
    • http://muszempilla.com/files/file/guvipenojowe.pdfIn PDF document text
    • https://prikolnaya.com/wp-content/plugins/super-forms/uploads/php/files/824b7c5331770584de1ba8beaba492f6/venodosevawoxezokadujude.pdfIn PDF document text
    • http://wbbray.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075611a16812---genefotanop.pdfIn PDF document text
    • http://www.jamesbgriffinlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607721cd55569---30615172592.pdfIn PDF document text
    • https://humantouchtranslations.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/160d9c5f732e99---kujuxitokedejexake.pdfIn PDF document text
    • https://terminarz.online/kosmetyczka/krakow/files/63815237009.pdfIn PDF document text
    • http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/jehnv4hf6cd0g1t5msg3f64c33/54975447806.pdfIn PDF document text
    • http://nhatminhtrading.vn/app/webroot/uploads/files/vipezegomu.pdfIn PDF document text
    • https://kaptenhoki.net/contents//files/dogabujodopabegudof.pdfIn PDF document text
    • http://changrung.com/ckfinder/userfiles/files/kapodononinov.pdfIn PDF document text
    • http://szalkasszorutacskok.hu/app/webroot/files/content/files/wugonovoposikemevij.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010643.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10643 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011e5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E5A 10456 bytes
SHA-256: d20f633f8405e7755cd6767056bd6924e861969deebc481dbc2b066d354f53dc
font_02_sfnt_off00013628.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13628 18960 bytes
SHA-256: 15ec335c708cc888126a1459512fae0acac173487eb92e81f8d4be2980e36c54

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