Malicious PDF — malware analysis report

Static analysis result for SHA-256 071f7d9a51ef6bf9…

MALICIOUS

PDF

87.1 KB Created: 2021-06-13 22:54:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 84a9f8d38273899d1b32136c9aeb2de3 SHA-1: 2fa49763d6408322eb71b287fe89981c7fca590b SHA-256: 071f7d9a51ef6bf9a8287b34ee9a03fed5f68ffb7b034680db8b64348f17e2e9
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The file contains numerous external URLs, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of a 'download button' heuristic further supports the phishing or malware distribution lure. The document's content, though heavily obfuscated, appears to be a lure related to 'Minecraft mod cannon'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://pixomot.ru/uplcv?utm_term=minecraft+mod+cannon PDF link annotation
    • http://glotecgh.com/upload/editor/file/79355466807.pdfIn PDF document text
    • https://adlinefor.com/home/webagen/public_html/korn/data/file/sonorinos.pdfIn PDF document text
    • http://reclaimsplus.com/wp-content/plugins/super-forms/uploads/php/files/900f8fb16a2d4f8cbb1c9f76502ae079/80727349896.pdfIn PDF document text
    • http://bezpieczna-strefa.pl/wp-content/plugins/super-forms/uploads/php/files/57b2a8e7701654c723efc2d8574b1120/busozegefonirunupodebab.pdfIn PDF document text
    • https://hightechrustremovers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16085813cce050---95381427721.pdfIn PDF document text
    • http://okzawidow.pl/img/upload/files/xixefomez.pdfIn PDF document text
    • https://fermuar.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609fcc20ac7de---73072385529.pdfIn PDF document text
    • https://www.glasswindowequipment.com/wp-content/plugins/super-forms/uploads/php/files/d8b1b374fa071f86c6d864f757180fa2/pivinipuvasozoje.pdfIn PDF document text
    • https://www.saenger-ohg.de/wp-content/plugins/formcraft/file-upload/server/content/files/16079e7d155be6---6433140762.pdfIn PDF document text
    • http://www.gaviprintpack.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f8112e11bd---zivomepomiborajuvobejek.pdfIn PDF document text
    • http://alltechsro.cz/files/11592256344.pdfIn PDF document text
    • https://hotelristorantenovecento.it/wp-content/plugins/super-forms/uploads/php/files/0f8de5cc98b1803966bc92f1071d02ee/48143398177.pdfIn PDF document text
    • http://paintingservicesonline.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160a181dde5278---65551165280.pdfIn PDF document text
    • http://md-servicios.com/userfiles/file/52413680999.pdfIn PDF document text
    • http://zhengfutz.com/v15/Upload/file/202152011129388.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e89f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE89F 1964 bytes
SHA-256: 9aa14dd7ac2d2f30d81558d95054f5684d1784599d8daecc168d36014f8c36e6
font_01_sfnt_off0000f1ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1AB 4964 bytes
SHA-256: 57fef49e408ec9f27fc25b54a05496a6d1bfa1393d344287ab5e681534f6e8c1
font_02_sfnt_off0001027f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1027F 1672 bytes
SHA-256: 0be6b3f70723078dfc3005fb55bdc19c18661b0234ac7947c350f1ad54e5a497
font_03_sfnt_off00010ae8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AE8 11788 bytes
SHA-256: d2e48e2f14a7ffaf2a49f43ceb02b7d0a61c79319710d94ef7a45dd4ddb3588f
font_04_sfnt_off00013371.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13371 17248 bytes
SHA-256: e8fe55334a2dec54abca545104c09c658afdc68684d0ab21f13ef9bfcc3b0f35

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