Malicious PDF — malware analysis report

Static analysis result for SHA-256 da5d294c7b774a9b…

MALICIOUS

PDF

73.4 KB Created: 2021-09-04 15:32:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: f108fdc9617b8b40b5df613ff2eb0e6a SHA-1: 889e40f9e9300a4598edb4f31079dc22623e1e1e SHA-256: da5d294c7b774a9bbde87767be08ef4dd8aec3d1ba682c5055ae8a68e59f466e
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was identified as malicious by ClamAV and an ML classifier. It functions as a link farm, containing numerous URLs pointing to compromised WordPress upload directories and other disposable hosting. These links likely lead to phishing pages or further malware downloads, consistent with a spearphishing attachment delivery method.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6691

Heuristics 5

  • 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
  • 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://www.andimoda.com/wp-content/plugins/super-forms/uploads/php/files/e085dd1b8ba75670784872d198c2320c/96875089778.pdf In PDF document text
    • https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/70b2b5c8b3e07c7a3ef43e70e9b393c2/93895232250.pdfIn PDF document text
    • https://shih-tzu.ro/files/file/xijiwejuxalesabevoz.pdfIn PDF document text
    • https://trucraftsmanship.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aab166e3ddf---pokezudojosu.pdfIn PDF document text
    • http://klick-tipp.info/ckfinder/userfiles/publics/files/15097178234.pdfIn PDF document text
    • https://www.geosuiteonline.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607276afab8e7---pobuwiti.pdfIn PDF document text
    • https://cradlegold.com/wp-content/plugins/super-forms/uploads/php/files/v2p14v5t1qa7uhol5lg7jvof0b/99890713089.pdfIn PDF document text
    • http://union.travel/ckfinder/userfiles/files/53197388695.pdfIn PDF document text
    • http://baove24h.org/upload/files/mimizavememafuvutavinune.pdfIn PDF document text
    • https://duel.pl/userfiles/file/foverogasovikavox.pdfIn PDF document text
    • http://shmountaineering.co.uk/wp-content/plugins/super-forms/uploads/php/files/imafvtqocuioj5rgdh6q5otrc7/28546935739.pdfIn PDF document text
    • http://www.deadclan.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608dc790760f3---19416561544.pdfIn PDF document text
    • https://firsatpin.com/calisma2/files/uploads/62782008388.pdfIn PDF document text
    • http://kovospm.cz/fotky/file/53282268883.pdfIn PDF document text
    • https://astoriareiki.com/wp-content/plugins/super-forms/uploads/php/files/adca41d0ceda86b4a353db3bfb0d9524/12353457469.pdfIn PDF document text
    • https://www.lesson-online.org/wp-content/plugins/super-forms/uploads/php/files/om86r0iq6sckahsi4i57op4t61/79329827967.pdfIn PDF document text
    • http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/cf39ba050c99ff004687fc2112409ef9/33720163960.pdfIn PDF document text
    • https://xn--80aaaglcftt5alesfkk7f.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/d88bf910517dd1e8ed1dfd3d8438870d/24116873723.pdfIn PDF document text
    • http://work4shop.cz/userfiles/file/81727893304.pdfIn PDF document text
    • http://cascinamana.it/userfiles/file/35492968923.pdfIn PDF document text
    • http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/hvlp5jp01mkmfu4569gat34mu6/58095735223.pdfIn PDF document text
    • http://www.tecnotrefg.it/wp-content/plugins/formcraft/file-upload/server/content/files/160bedb2f6f3f2---gawoxukalituzebe.pdfIn PDF document text
    • https://sonarmusic.hu/up_image/file/sejukikekamig.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=james+cameron+spiderman+pdfPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e46b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE46B 18400 bytes
SHA-256: 76d9d8ff3bf1969a40be9ae05866649eb7f98f0d85767f52aac92a63896dab4f

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