Malicious PDF — malware analysis report

Static analysis result for SHA-256 2802a7fe685c118c…

MALICIOUS

PDF

75.8 KB Created: 2021-06-27 17:21:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 55114c25006aea59764c130a11af7abd SHA-1: 0fecfe63a197623e8854395010e0646bdbc46f2a SHA-256: 2802a7fe685c118c306cb305e57fb5a4305fe1afeeda3aad1ca942759d7da67f
156 Risk Score

Malware Insights

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

The PDF document was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, directing users to multiple compromised WordPress upload directories. These links likely lead to phishing pages or further malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

Heuristics 6

  • 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.
  • 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://laser-arena.ch/wp-content/plugins/formcraft/file-upload/server/content/files/16074f945db541---munadexulopumezogudoziw.pdf
    • https://www.pietri-automobiles.com/wp-content/plugins/super-forms/uploads/php/files/9f2ei857skl58dlo85s4tbtcv0/11223682372.pdf
    • http://xn----8sbpvg0afdbe.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/b29b6cl1jjbl603erujv0899r2/xejonomazibufuriwis.pdf
    • https://www.projectorrentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607197633491b---mugofuboxulatomibu.pdf
    • http://ctkupavna.ru/upload/file/migiso.pdf
    • https://www.ideaklinik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16093e6ef3b666---dikevilufijinuzatod.pdf
    • http://icltindia.in/userfiles/file/82480537373.pdf
    • https://www.clubmanizales.com.co/wp-content/plugins/formcraft/file-upload/server/content/files/1606d153364866---67909470534.pdf
    • http://bhttourist.com/upload/fckimagesfile/66559193403.pdf
    • http://sarahscupcakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089f6f8eaa46---zonaxozexofevaxil.pdf
    • http://www.adanakursmerkezi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a91171bb721---soxivufizos.pdf
    • https://www.westcountrystoves.co.uk/wp-content/plugins/super-forms/uploads/php/files/2a377939644f424aec4d648b981c08ed/7021753109.pdf
    • https://readxyz.org/wp-content/plugins/super-forms/uploads/php/files/4a0c91d32edb7c35e23870891f8d28f3/42922754961.pdf
    • http://gf-location.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1606d802fa2d76---97868301041.pdf
    • http://bergfin.se/wp-content/plugins/formcraft/file-upload/server/content/files/160aa52da9271a---godivuburugew.pdf
    • https://www.mercedesbenzofaustinservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606eb14417481---26936411298.pdf
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/3eee02692a2430c6c1cd23167d6af8c9/92474746272.pdf
    • https://fotojursa.cz/userfiles/file/pizakeb.pdf
    • http://kozelskadm.ru/files/uploads/files/disevazimawa.pdf
    • https://deconkhoemanh.com/wp-content/plugins/super-forms/uploads/php/files/3lqgn4jftbslp1vrheeus2osav/23020608698.pdf
    • https://maydongy.com/wp-content/plugins/super-forms/uploads/php/files/vfja5u3ndv6m558eo0a1758agf/46356329546.pdf
    • https://next-engineering.com/userfiles/files/39803780559.pdf
    • https://www.lang-mayer.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607d643110b38---29643563010.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bf00d4b7a02---38044184908.pdf
    • https://www.lesson-online.org/wp-content/plugins/super-forms/uploads/php/files/6e2jkede8pavbddha7h5p3g0s0/98844046633.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=grade+7+natural+science+term+1+assessment
    • 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_off0000c465.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC465 16792 bytes
font_01_sfnt_off0000dc7c.bin
6bf3d980b889d1fdf4bfdfd04c833ed177ed52d2d098d78152b3b8adc13ddd79		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDC7C 10652 bytes
font_02_sfnt_off0000f4ef.bin
4e930ccd789309b7173823e28cd2fb47947294ef7a0b35dab205e5cf436f20da		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF4EF 16804 bytes

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