Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9e25e98a96d0ced…

MALICIOUS

PDF

79.5 KB Created: 2021-06-29 11:47:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: f5293951a3a89be571953d7269569783 SHA-1: 48f411a1b59a201a2f163f4886fd83b658d96c10 SHA-256: b9e25e98a96d0ced7548daf2c3996f2abcae45e14ebb75795297e3da7f60a2df
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains embedded JavaScript and numerous external URIs, many pointing to compromised WordPress sites. The heuristics indicate it functions as a link farm, likely intended to redirect users to malicious content or phishing pages. The ClamAV detection and ML classifier strongly suggest malicious intent, consistent with a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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
  • 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://garglob.ru/uplcv?utm_term=d%26d+silver+to+gold
    • http://studiotecnicolamanna.com/userfiles/files/88243984389.pdf
    • http://cardealer-space.com/js/upload/files/bupakananak.pdf
    • https://goldengrowers.com/wp-content/plugins/super-forms/uploads/php/files/e61ab969a41fe43e662d4d9c99910a25/71851319270.pdf
    • https://wholisticvibrations.com/wp-content/plugins/super-forms/uploads/php/files/461a38e549243dc94efeff60fc645027/75220857902.pdf
    • http://bikipvuikhoedep.com/app/webroot/files/editor_upload/files/sirudidefadorar.pdf
    • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/5e1dfcfb845da4b2187e1532b198eb8a/38834098677.pdf
    • https://spherule.org/wp-content/plugins/super-forms/uploads/php/files/9f19056aabbaf9392e129f23cec4409e/92616886804.pdf
    • http://www.fsnn.se/wp-content/plugins/formcraft/file-upload/server/content/files/1608a385546ac7---25648815667.pdf
    • http://anoh.net/pds/userfiles/files/kegikurexovina.pdf
    • http://studiosantese.eu/userfiles/files/1384092115.pdf
    • https://wamsconference.com/wp-content/plugins/super-forms/uploads/php/files/021c34370077c698c989feb631f175cc/93346000517.pdf
    • https://www.webplease.it/wp-content/plugins/super-forms/uploads/php/files/6oc68b8g8k59chj0e32bcj4r0u/61936305158.pdf
    • https://www.mercedesbenzofaustinservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afd3af70c78---tukegorolibuwo.pdf
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/94hb9aurjhs57c6tudo85q03j2/tigeno.pdf
    • http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160d374d0106df---41393246014.pdf
    • https://avenirpourtous.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1608f762a6dc56---pevow.pdf
    • http://reicar.dk/userfiles/file/95735497733.pdf
    • http://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cd93a343d47---dilulugimumun.pdf
    • https://vickers-electronics.co.uk/wp-content/plugins/super-forms/uploads/php/files/c71d84ac27d09c3558b60ec6d2721a7d/pokefogo.pdf
    • http://westleyden72reunion.com/clients/4/46/469dc9162705cbff2d1fbe132f144f37/File/74325651636.pdf
    • http://www.siscbolivia.com/admin/uploaded/fck/file/sotiwuganugemejusituf.pdf
    • http://osullivanspressurewashing.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072b717106e0---44949457615.pdf
    • https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/2f172333dbb64f5c7ba7a1ad12ade6af/24742582158.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_off0000d982.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xD982 16792 bytes
font_01_sfnt_off0000f194.bin
d1f6d5c6616f2713dcd63c43513a33097f05bd9a218bd408a3ad1cfbce888296
pdf-font-stream PDF embedded font (sfnt) at offset 0xF194 17544 bytes
font_02_sfnt_off00011ed2.bin
f695977626623e59fedb2fbedebd468d0acf89ff6f6ceafeb3cee4351ddee6c8
pdf-font-stream PDF embedded font (sfnt) at offset 0x11ED2 9076 bytes