Malicious PDF — malware analysis report

Static analysis result for SHA-256 69327078419275af…

MALICIOUS

PDF

94.3 KB Created: 2021-08-17 12:14:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 0ea636a41fb58000c879d4fd88ca51da SHA-1: 7eae10c391deb56e4b607c26b677e1379db36db6 SHA-256: 69327078419275af3177daca3dd0422cb24cbf5a33394cb5d63fb874e19120c7
124 Risk Score

Malware Insights

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

The file was detected as a phishing trojan by ClamAV. Static analysis revealed numerous embedded URLs pointing to various domains, many of which appear to be compromised WordPress sites or disposable hosting. These links are likely intended to redirect users to malicious content or phishing pages. The PDF structure and link farm characteristics suggest a deliberate attempt to obscure the final destination and evade detection.

Machine Learning

  • Nyx PDF Classifier clean score 0.2156

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://crysiq.ru/uplcv?utm_term=manual+de+corel+draw+x3+pdf PDF link annotation
    • http://everest-c.ru/ckfinder/userfiles/files/95242240847.pdfIn PDF document text
    • http://www.hangmandigital.com/files/file/7875746157.pdfIn PDF document text
    • http://s8radziejowice-paszkow.pl/userfiles/file/81574942181.pdfIn PDF document text
    • https://beliangka.com/contents//files/zogigebevenexuwi.pdfIn PDF document text
    • https://acronimocostanzo.com/userfiles/file/95266575220.pdfIn PDF document text
    • https://www.burit.net/wp-content/plugins/formcraft/file-upload/server/content/files/1606ee8f34d2d2---setenirejozakobuvesevem.pdfIn PDF document text
    • https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/06f83cdc1aef6954054517e408bc69b5/1884536199.pdfIn PDF document text
    • https://nobleanimalsanctuary.org/wp-content/plugins/super-forms/uploads/php/files/tmp/2845162874.pdfIn PDF document text
    • http://clubselectionvoyages.com/images/file/finuwakigotesekuwe.pdfIn PDF document text
    • https://izr.fr/files/69319752637.pdfIn PDF document text
    • http://imdad-egypt.com/userfiles/file/gufopin.pdfIn PDF document text
    • http://tecsun-moscow.ru/docs/file/56709041341.pdfIn PDF document text
    • http://uelzecht.lu/userfiles/files/mibete.pdfIn PDF document text
    • https://www.cedicar.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cdcc14a75f9---mipote.pdfIn PDF document text
    • http://gelateriacool.it/userfiles/files/85021661809.pdfIn PDF document text
    • https://codecs.roimages/file/kaguteke.pdfIn PDF document text
    • https://music-group-store.com/upload/files/jurejenofibupanipu.pdfIn PDF document text
    • https://ivfnna.gr/wp-content/plugins/super-forms/uploads/php/files/faf374a70bafe9fe1ae8a1eadf44691e/65733321747.pdfIn PDF document text
    • http://littlepearlspublishing.in/data/eimages/file/3716294648.pdfIn PDF document text
    • http://www.tobywells.org/media/fckdir/file/70855511936.pdfIn PDF document text
    • https://perleyparish.org/wp-content/plugins/super-forms/uploads/php/files/5b18e2a589bbe356630afde6342aa74e/welekajaxibuvize.pdfIn PDF document text
    • https://abril.pe/wp-content/plugins/super-forms/uploads/php/files/a1aff0dd04rd4u19ur0ga456n4/todutawexavuvimeta.pdfIn PDF document text
    • https://pavaniautismschools.com/wp-content/plugins/super-forms/uploads/php/files/hqsd8am2fh32jnehbop359rndo/jepekakabilebabalokasaf.pdfIn PDF document text
    • 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_off00012373.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12373 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00013b8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B8A 10708 bytes
SHA-256: 7a8ccb1b03aabaaea3584414ba8208c7b2283366db1da72fb53f11e7e50b6ca3