Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce32d5e229dddb5c…

MALICIOUS

PDF

86.3 KB Created: 2021-07-01 00:48:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 1728c0eb89be907985a3665c815995a3 SHA-1: b10ae282f7522721b25fb2d145a8fbe41bce3c97 SHA-256: ce32d5e229dddb5c1e4df7656c6dd8892df0cb6dc7cb7743c6c7d494eadd83d4
196 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, exhibiting characteristics of a payment redirection lure. It contains numerous links to compromised WordPress sites, suggesting an attempt to host malicious content or redirect users to phishing pages. The presence of external URIs and link farms indicates a likely multi-stage attack where the initial PDF serves as a dropper or redirector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9848

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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://archism.ru/uplcv?utm_term=wow+classic+character+migration
    • http://www.saraviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080dc398142a---45754890357.pdf
    • https://delphin-restaurant.com/ckfinder/upload/files/10591002578.pdf
    • http://www.vivelamusica.es/wp-content/plugins/formcraft/file-upload/server/content/files/160aa411e905df---fitos.pdf
    • http://pansophers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160707c5b98b18---xurugumefelonutabojolu.pdf
    • http://beckydavidsonhomes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160acf64c9cd28---kebixadatefo.pdf
    • http://fotossc.pl/_files/file/89508685236.pdf
    • https://muratay.nl/userfiles/file/15147960962.pdf
    • https://ocvirapuato.com.mx/wp-content/plugins/super-forms/uploads/php/files/8b33b879315810c352c338187e9ccd07/14912849495.pdf
    • http://iideree.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a39f9c84c27---86605549001.pdf
    • https://refundsrefunds.com/wp-content/plugins/formcraft/file-upload/server/content/files/160779374a41ba---10653567463.pdf
    • http://ptk-astana.kz/wp-content/plugins/super-forms/uploads/php/files/8fbf2f6725caff1174f3e97c0be1ecdb/sevupatetol.pdf
    • https://www.frontierexim.com/wp-content/plugins/super-forms/uploads/php/files/915um9s94qhbe2n0v0ekkq2a3g/16989017690.pdf
    • http://www.alcera.ca/userfiles/file/28548093362.pdf
    • http://xn--80age2amlc.xn--80adxhks/pics/images/file/56508890997.pdf
    • http://novaserv.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc4d99a45c---71605202327.pdf
    • https://sckstone.com/wp-content/plugins/super-forms/uploads/php/files/74d6544790a44c0e5f6704b2e10e1ed6/27749113573.pdf
    • https://www.mybizwebsites.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc9e5b3a259---bozigi.pdf
    • http://vdgairconditioning.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607f2b27ce809---21482747298.pdf
    • https://investainternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9a91aa601---36040204164.pdf
    • http://www.opencalgary.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607757571417f---79420011826.pdf
    • https://abril.pe/wp-content/plugins/super-forms/uploads/php/files/ems4pdoggtti0efss9p1km3mir/43725545388.pdf
    • https://xo-sound.ru/userfiles/file/xigivogijufinakezuwi.pdf
    • http://mini-garden.ru/userfiles/file/61498641507.pdf
    • https://hopefor.today/wp-content/plugins/super-forms/uploads/php/files/fb0d383c6958896bdca346dbb6e37932/70167051667.pdf
    • http://angeladaniel.eu/uploads/files/9879116052.pdf
    • http://kasargod.net/uploads/file/46731904756.pdf
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000edde.bin
00f035f52d065e84fc8ec8ec5171d6d4b2198e1aa4afc528eb61d0925ee7bd11		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEDDE 10756 bytes
font_01_sfnt_off0001067c.bin
65807ffd79c96d55a29e9cb93dbc70944f921a26c3959db17dd4d0275f733602		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1067C 16784 bytes
font_02_sfnt_off00013251.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13251 16792 bytes

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