Malicious PDF — malware analysis report

Static analysis result for SHA-256 e44f1285700b3fcb…

MALICIOUS

PDF

82.1 KB Created: 2021-07-04 22:55:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 4171dc07541c6823da48bf2219d5cccb SHA-1: f3833efe65d3ac22b515d25f82607009e0a9879b SHA-256: e44f1285700b3fcb6ff5ba6eefa353676c053cb01cfc2710d1209c644f9e1c84
154 Risk Score

Malware Insights

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

The PDF contains a link farm with numerous URLs pointing to compromised WordPress upload directories and disposable domains. This structure is indicative of a phishing or malware distribution scheme, aiming to lure users to malicious websites. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports the malicious nature of this document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5946

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/16072feaa0ca63---82154062106.pdf In PDF document text
    • https://endoaccessories.com/wp-content/plugins/super-forms/uploads/php/files/7e67oc5pf35fqepttgcrgghv95/jagopinadaxomapani.pdfIn PDF document text
    • http://snap-drone.com/userfiles/file/tunobub.pdfIn PDF document text
    • http://www.europesolidaire.eu/userfiles/files/4004014008.pdfIn PDF document text
    • https://travels-ukraine.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b608ca4aabb---tedibededeja.pdfIn PDF document text
    • https://travelstore.tn/userfiles/file/10416761644.pdfIn PDF document text
    • http://www.kreasoft.mx/wp-content/plugins/formcraft/file-upload/server/content/files/16078735498af7---23539800943.pdfIn PDF document text
    • http://osc-pribor.ru/products_pictures/file/46924195416.pdfIn PDF document text
    • https://cremyco.com/app/webroot/docs/file/mufazafet.pdfIn PDF document text
    • https://paloaltospeakerseries.com/wp-content/plugins/super-forms/uploads/php/files/1c09b5eec7f907782c478ab895225392/tefoxutumalidu.pdfIn PDF document text
    • https://sokolzgierz.pl/web/uploads/files/83520690442.pdfIn PDF document text
    • http://www.dj-csnl.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160d6a024609c5---92560358613.pdfIn PDF document text
    • http://karimeh.com/public/userfiles/file/lizaj.pdfIn PDF document text
    • http://steclotildehorton.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16075d8de99310---14730777042.pdfIn PDF document text
    • http://xn--80akij1ajew.xn--p1ai/wp-content/plugins/formcraft/file-upload/server/content/files/160796ec7126d1---zalijawarobamijuw.pdfIn PDF document text
    • http://mouaumfb.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a22b07d3d52---bajumakunuviwobul.pdfIn PDF document text
    • http://dashoernerboot.de/userfiles/jolixegojexibufekujowu.pdfIn PDF document text
    • https://mindweave.co.uk/wp-content/plugins/super-forms/uploads/php/files/e48267qom6qc95jd5k0i7i3vru/dezesiguxexefa.pdfIn PDF document text
    • http://adoriantarla.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16076ab77be21d---saguguk.pdfIn PDF document text
    • http://mirandatutoringcentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16092bf917a243---povuzadetine.pdfIn PDF document text
    • http://www.whirlpool-beachcomber.at/wp-content/plugins/formcraft/file-upload/server/content/files/160776bb4c9496---14725295929.pdfIn PDF document text
    • http://bukharaalpharetta.com/sites/default/files/file/tudololoziduzinefewosi.pdfIn PDF document text
    • http://nuyewrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/aca760275fbf80225443fd24783b5dbe/12612050432.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160baca4dc22ad---jedanodisopix.pdfIn PDF document text
    • https://spectrumohio.com/wp-content/plugins/super-forms/uploads/php/files/169dfc22796481f4cd7879d2c0f58996/46026682394.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=how+do+i+know+that+god+is+listening+to+my+prayersPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000104ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104BA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011ccc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CCC 17232 bytes
SHA-256: 38b75f924a7a1fcf156d19362f5c0af67efdf0f9db0dbcbdadb045fd69b0c634