Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa7d613ebe4e7cbb…

MALICIOUS

PDF

98.6 KB Created: 2021-07-02 08:17:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 0cb92b7e5273f4105bd6c4aa9bf5df47 SHA-1: 4a9433222dc51b096b403b830b00778cfdf3feff SHA-256: fa7d613ebe4e7cbbab9130a622fdf7b09138ad65cebb5d135a7253686637104c
204 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of an advance-fee scam, using urgency lures and directing users to multiple external URLs hosted on compromised WordPress sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to phish for credentials or financial information through the linked content. No scripts were extracted, but the document structure and embedded URLs point to a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9862

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://smoothnomad.com/wp-content/plugins/super-forms/uploads/php/files/p40d59e5rca3f946oc35pg4mek/fokeza.pdf
    • http://trunglam.vn/uploads/userfiles/file/lokuvegu.pdf
    • https://mudateconmigo.cl/wp-content/plugins/super-forms/uploads/php/files/23a242328692996ed86d4e9094edd875/14838067764.pdf
    • http://theettiares.com/clients/f/f0/f03dfc1790708d0b03c48e9879ef2ea6/File/71315803085.pdf
    • http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/160aa6530eafbc---guvibu.pdf
    • http://aunay-sous-auneau.fr/ckfinder/userfiles/files/71869811693.pdf
    • http://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077e39a5b824---lanosewabujalikari.pdf
    • https://oglethorpeclub.org/~oglethor/UserFiles/file/36649724380.pdf
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c5b872e34b8---79857585755.pdf
    • https://hartwellcook.com/wp-content/plugins/super-forms/uploads/php/files/58bfa6548174578e33c73d7419880dff/guzaxuxek.pdf
    • https://www.denisonlandscaping.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d4696be00f---91150490792.pdf
    • http://mirembeestate.co.ug/wp-content/plugins/formcraft/file-upload/server/content/files/1608e68eec6c7f---mugodugazuratif.pdf
    • http://recruiters-zone.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072857a33aa6---13803986807.pdf
    • http://richardarnoldalumni.com/clients/a/ad/ad1dcfa6f69ac51e3fe6bec18f6cf6d6/File/fawavoxobujizowe.pdf
    • https://www.skyline-recruiting.com/wp-content/plugins/super-forms/uploads/php/files/22acf1d6dcd4610a09467fc56da631e4/wasutekotug.pdf
    • http://www.iqubz.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607348d04870f---4642154175.pdf
    • http://profisystem.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160c415fe8e240---laviparudojuvadikifojeri.pdf
    • https://cristiandellavedova.com/wp-content/plugins/super-forms/uploads/php/files/ggpfccc204i7sflr9ogcs4eci6/24728549736.pdf
    • https://www.asahinadigital.com/wp-content/plugins/super-forms/uploads/php/files/3keojf5qjbguq34l1qf3ou9en2/19765132589.pdf
    • http://www.caribbeandentist.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b1813f2146---98717998634.pdf
    • https://profbuhotchet.ru/wp-content/plugins/super-forms/uploads/php/files/0e66a65e1703054c42051be0e6a40879/zotagugu.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=bsby+official+website
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f89a.bin
f407ac77319b7e5719165eb29a2a1a9d022a322ebaa717a73437676ab3dbba10		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF89A 20268 bytes
font_01_sfnt_off00012eb0.bin
fd494554c7a7a2c4488382a78096c535ff133766c7221992be4f6a58596b2467		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12EB0 16164 bytes
font_02_sfnt_off00014427.bin
a432375ee85b1d870fc267e1cf3bed6fa5c40194fb1b545654742de76127c611		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14427 10516 bytes
font_03_sfnt_off00015c66.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15C66 16792 bytes
font_04_sfnt_off00017473.bin
9c3c50ca7885eb1b87261f6f74ba185aca171ae216209544253fbc3ee3acc073		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17473 1720 bytes

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