Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5e3003757114a72…

MALICIOUS

PDF

69.5 KB Created: 2021-09-05 12:03:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 59160ffe455d5904a7cf845ef4d04007 SHA-1: 03c04e01159fac880fbc81eb6dd7482db8f26682 SHA-256: e5e3003757114a725d1ef92c75e8ba3fce46fefc13db185a17a210697ae153a9
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs that form a link farm, with many pointing to compromised WordPress sites or disposable hosting. The ClamAV detection and ML classifier indicate malicious intent, likely for phishing or malware delivery. Although no scripts were directly extracted, the PDF structure and URL patterns are consistent with malicious document lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7796

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://garglob.ru/uplcv?utm_term=devanti+ice+maker+user+manual PDF link annotation
    • https://nhathuydesign.com/wp-content/plugins/super-forms/uploads/php/files/l82n75186gibg6leip30qho6oo/99536019867.pdfIn PDF document text
    • http://azizolace.cz/images/file/98214717061.pdfIn PDF document text
    • https://www.truesdalepainting.com/wp-content/plugins/formcraft/file-upload/server/content/files/160727aa3afd3a---60929014904.pdfIn PDF document text
    • http://jagdrevier.hu/upload/images/file/novadadinorebibejujipama.pdfIn PDF document text
    • https://silverstonedevelopments.com/ckfinder/userfiles/files/gemowutobezozozodojorur.pdfIn PDF document text
    • http://marinda.ru/pics/images/file/85220817368.pdfIn PDF document text
    • http://burchiellati.com/file_fck/file/jojivepiwi.pdfIn PDF document text
    • http://mini-garden.ru/userfiles/file/18720690181.pdfIn PDF document text
    • http://www.tecnotrefg.it/wp-content/plugins/formcraft/file-upload/server/content/files/16085d5ea89a5e---11909558722.pdfIn PDF document text
    • http://miet-boot.ch/images/uploadedimages/file/tikavifubegoxodapew.pdfIn PDF document text
    • https://monacollection.ua/wp-content/plugins/super-forms/uploads/php/files/243d66bcb635ae03bd61c7083e13fbdc/mexidadoje.pdfIn PDF document text
    • https://www.chauffeur-prive-nice.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160adc56bc79f9---64480207168.pdfIn PDF document text
    • http://korea-seals.com/ckfinder/userfiles/files/9516445539.pdfIn PDF document text
    • https://hopefor.today/wp-content/plugins/super-forms/uploads/php/files/7bec7162c350adc8d9dd0895233491ba/98526400786.pdfIn PDF document text
    • https://trunglamdecor.com/uploads/userfiles/file/87692406515.pdfIn PDF document text
    • https://aalatour.com/basefile/b2caalatourcom/files/42486756038.pdfIn PDF document text
    • http://galluccifaibano.com/userfiles/file/313561668.pdfIn PDF document text
    • http://yanartekstil.com/firma/files/33269708338.pdfIn PDF document text
    • https://www.webhisto.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1612a8639290a9---99915132555.pdfIn PDF document text
    • http://pincailight.com/zk/UploadFile/file/2021061502132873499.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608fe9250e7e2---rokajenibekuzufu.pdfIn PDF document text
    • https://www.adler-leitishofen.de/wp-content/plugins/formcraft/file-upload/server/content/files/160e1b79ba00a3---deletibofoguwuxofobilu.pdfIn PDF document text
    • http://brooklynsmokeshops.com/admin/images/file/10896722532.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160db778d8ee14---50858738456.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_off0000e927.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE927 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001013e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1013E 10532 bytes
SHA-256: a0307fba5bc86cb1bbeb06f6bce1c6031894bc9b9e06f38699b97300c198cc96

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