Malicious PDF — malware analysis report

Static analysis result for SHA-256 01362e5082616ed0…

MALICIOUS

PDF

80.0 KB Created: 2021-06-09 18:16:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 087254a8e02f35d083f8b8b4c876d28e SHA-1: caa917aae2987189c6148752210dd5c729d9594e SHA-256: 01362e5082616ed07d34d9c4b86dac6ee77b16c797ed0be169f953097e9d2a1a
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a link farm pointing to multiple disposable hosting sites, disguised as search results for 'gcam apk poco x3 nfc'. This suggests an attempt to trick users into downloading potentially malicious files. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9585

Heuristics 4

  • 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
  • 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://infrive.ru/uplcv?utm_term=gcam+apk+poco+x3+nfc PDF link annotation
    • http://posekatzahradu.cz/files/file/tonolalemijomodevulata.pdfIn PDF document text
    • https://www.hontoys.com.au/wp-content/plugins/super-forms/uploads/php/files/6ifq141rj8brtfkj621km3tk9c/62089536958.pdfIn PDF document text
    • http://osc-pribor.ru/products_pictures/file/penuvojegisuzozipiwuvujof.pdfIn PDF document text
    • http://adabaskimerkezi.com/upload/file/77807618280.pdfIn PDF document text
    • https://realestateconnect.pro/wp-content/plugins/super-forms/uploads/php/files/2irh7ucurov9dbsgneu5mkviq1/fujesakigaguwi.pdfIn PDF document text
    • https://carthink.org/wp-content/plugins/formcraft/file-upload/server/content/files/160864d04647da---xapasaxatajojudumo.pdfIn PDF document text
    • https://cardion.dk/gfx/fckimages/file/tolikujilosupojoresinix.pdfIn PDF document text
    • https://www.ayersworthglen.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5a1845e06e---29710048084.pdfIn PDF document text
    • https://indacphuc.com/wp-content/plugins/super-forms/uploads/php/files/426ge720u4tj4hq0a8ink4uuvd/penazuw.pdfIn PDF document text
    • https://www.lightingdynamics.com/wp-content/plugins/super-forms/uploads/php/files/b279c58b765715e8af0f9a85cd6c1fa3/jojubobodozokapapew.pdfIn PDF document text
    • https://mrmobilewebsite.agency/wp-content/plugins/super-forms/uploads/php/files/c4836f8f7e47de890a07d02efc76cca3/89086871384.pdfIn PDF document text
    • https://www.sussexweddingservices.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1609448ebf0698---67179922772.pdfIn PDF document text
    • http://az4group.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160ad12de0f527---lolitogudu.pdfIn PDF document text
    • http://pvsystreports.com/wp-content/plugins/super-forms/uploads/php/files/092v25kfghqc1g36om8udph3a1/69198971325.pdfIn PDF document text
    • https://codecs.ro/images/file/79598881586.pdfIn PDF document text
    • https://fatheragneliti.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608662dbcecd9---rovakuwakigogime.pdfIn PDF document text
    • https://allcreaturesinc.com/files/files/58042098909.pdfIn PDF document text
    • http://socialbomjesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609b0c4cb7eba---85531124432.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010706.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10706 5184 bytes
SHA-256: 71c904c826c494e5b563bc871a220610565cd60117c59d020deb08ac3e309239
font_01_sfnt_off000118b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118B1 13848 bytes
SHA-256: 255cabb29f196230c084fdc452da40e2fa0522f7215a66957e57d0d394d3621c

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