Malicious PDF — malware analysis report

Static analysis result for SHA-256 7738419f9d282bf9…

MALICIOUS

PDF

81.7 KB Created: 2021-07-03 17:47:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 9d32959440f5429931fddfceb8418194 SHA-1: 7eaf0b14e477dbc03dd0f132fe3bf83353f5e499 SHA-256: 7738419f9d282bf96d9e8a381eb44fb1232abb7d6b13d3b9c1dadaa6486da869
204 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript and multiple external links, many of which point to compromised WordPress sites or disposable hosting, indicating a phishing or credential harvesting attempt. The heuristic 'SE_PAYMENT_REDIRECT_LURE' strongly suggests a financial scam. The embedded JavaScript likely facilitates the redirection or further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://advantagelic.com/singhania/downloads/file/65830567890.pdf In PDF document text
    • http://drive4smilesquebec.com/clients/f/f5/f58105ca183540932673f5bf18e62671/File/42261881608.pdfIn PDF document text
    • http://www.apsetedavisi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160831d4a242d0---87100040251.pdfIn PDF document text
    • https://cafeau1ait.xyz/js/ckfinder/userfiles/files/zemetowupojumotajil.pdfIn PDF document text
    • https://www.endthestigmacounselling.com/wp-content/plugins/super-forms/uploads/php/files/k76ollldtes6614nkcgqd35coa/joninizileneselinivos.pdfIn PDF document text
    • https://nowackleverkusen.de/wp-content/plugins/formcraft/file-upload/server/content/files/160d2792f7cde3---fijejuti.pdfIn PDF document text
    • http://www.lavalledesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4dfc074e2a---81311615478.pdfIn PDF document text
    • https://suma.ca/upload/editor/file/zojimemazuti.pdfIn PDF document text
    • https://prsnashville.com/wp-content/plugins/super-forms/uploads/php/files/033e48c0c3cab28040633b4ca081bc44/gisivorixek.pdfIn PDF document text
    • https://www.sadcmedia.com/wp-content/plugins/super-forms/uploads/php/files/aodlqfsoqiu147smbaord6blcs/pilitezotugetorolep.pdfIn PDF document text
    • https://www.sabiamente.es/wp-content/plugins/formcraft/file-upload/server/content/files/160876a4cb1acf---69368858254.pdfIn PDF document text
    • https://ukdirectremovals.com/wp-content/plugins/super-forms/uploads/php/files/fef740656e5c2ae90009f3dfcdd259e2/49658752134.pdfIn PDF document text
    • https://autoschiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609279d46a487---gepogaxosu.pdfIn PDF document text
    • http://anthonyvienna.com/sites/default/files/file/rotozujewanad.pdfIn PDF document text
    • http://premsaktidal.in/userfiles/file/3987353651.pdfIn PDF document text
    • http://xoblates.com/clients/e/e0/e08cfb93fb97b00c28394d0532709dc9/File/sudeva.pdfIn PDF document text
    • https://copab.tn/216mag.svn/uploads/files/86997850672.pdfIn PDF document text
    • https://www.inter-tube.co.uk/wp-content/plugins/super-forms/uploads/php/files/39d99c49284d1437f11c66cfabae0070/vitifibagogomatalifi.pdfIn PDF document text
    • https://hafa-verein.de/wp-content/plugins/super-forms/uploads/php/files/57e6b9584b8de94e7d9098012f585ed3/62671171469.pdfIn PDF document text
    • http://vgkbuilders.com/assets/files/xudedosid.pdfIn PDF document text
    • https://www.charityweiss.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608441b437dbd---sulafojavuligux.pdfIn PDF document text
    • http://scro.ru/pic/file/70668757770.pdfIn PDF document text
    • https://yarsan.ru/wp-content/plugins/super-forms/uploads/php/files/203550dbc44bb07449a6fac48ba261d2/munadusexono.pdfIn PDF document text
    • http://www.danvillern.com/wp-content/plugins/super-forms/uploads/php/files/knq9v993tugdpbmiq98o58nja0/38701158247.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=proof+of+fund+ownership+certificatePDF link annotation
    • 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dc29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC29 16836 bytes
SHA-256: 3897048d691fb8ff129eb886f16dda7571ed57a8d6bfafe001986af1d616a907
font_01_sfnt_off0001082a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1082A 10860 bytes
SHA-256: 0ed0d2ce85a2fef4f7db5dd503152e8c830448f6e062814d6f927c972568508f
font_02_sfnt_off0001214c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1214C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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