Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebc6280fea7ae927…

MALICIOUS

PDF

63.6 KB Created: 2021-09-26 11:05:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: fae28e70edb70eacbe5c01b37f8ec844 SHA-1: 15294f5dc6ea3fa886280074a91b8189aea37126 SHA-256: ebc6280fea7ae92734cc0d9b11a1bc1c8ccd93e707fd2f8f939076d339af3e58
124 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised websites or are part of a link farm designed to obscure the final destination. ClamAV detected this file as Pdf.Phishing.Trojan, indicating a malicious intent to deceive users into visiting potentially harmful sites. The presence of links on compromised CMS upload storage further supports a phishing or malware distribution vector.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4955

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 http://bowie.abwingsmd.com/uploads/files/39031859242.pdf In PDF document text
    • https://amursvoidom.ru/media/files/masalale.pdfIn PDF document text
    • http://etyekilovarda.hu/userfiles/file/99661600751.pdfIn PDF document text
    • http://fiumevivo.it/userfiles/files/16098288621.pdfIn PDF document text
    • http://swapnakoodu.com/fck_uploads/file/52698944395.pdfIn PDF document text
    • http://bhk-aindling.de/userfiles/files/14654413014.pdfIn PDF document text
    • https://rosenstein.lu/userfiles/files/83820901637.pdfIn PDF document text
    • http://christschoolblr.in/userfiles/file/16490433937.pdfIn PDF document text
    • http://jinruily.com/UploadFile/file/20210923010845368.pdfIn PDF document text
    • https://ppsu.cz/files/file/rerozupaxodumagevo.pdfIn PDF document text
    • https://maidintown.co.uk/wp-content/plugins/super-forms/uploads/php/files/ece5bed2fcff2bb39276be7874faeeec/dexijuzososug.pdfIn PDF document text
    • https://www.vibrationmonitoring.asia/wp-content/plugins/formcraft/file-upload/server/content/files/1614740b43eb55---kekedebidesizuxuzikolu.pdfIn PDF document text
    • https://denizlihorozu.com/resimler/files/68930549369.pdfIn PDF document text
    • http://www.asap-recruitment.net/upload/file/vapalirin.pdfIn PDF document text
    • https://solelane.com/ckfinder/userfiles/files/83895281020.pdfIn PDF document text
    • https://www.rockandroll.blog.br/wp-content/plugins/super-forms/uploads/php/files/hd3su0f9nend975e9o8qrutebp/memalumakomapiveweveloni.pdfIn PDF document text
    • https://sapporomn.com/userfiles/files/vavojenuzalipixelunuxen.pdfIn PDF document text
    • http://itagqatar.zajeltel.com/itag/file/files/namozawerijojagor.pdfIn PDF document text
    • http://art-wonders.com/ckeditor/ckfinder/core/connector/php/uploads/files/73571282599.pdfIn PDF document text
    • http://resetimpianti.it/reset/public/file/50216492295.pdfIn PDF document text
    • http://xinchenfast.com/upload/file/wipadavurekifafejawumo.pdfIn PDF document text
    • https://cardolf.ro/files/nojuvejid.pdfIn PDF document text
    • http://salamino.pl/userfiles/file/26996993365.pdfIn PDF document text
    • http://crystal-lamp.ru/uploads/files/39872058536.pdfIn PDF document text
    • https://plumcourse.com/wp-content/plugins/super-forms/uploads/php/files/c190601ff6b8805320d8d81bc790ba0c/sipebegijolavat.pdfIn PDF document text
    • http://hanasushimenifee.com/uploads/files/48879305433.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=passion+in+prison+watch+onlinePDF 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_off0000b13a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB13A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000c94c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC94C 15436 bytes
SHA-256: f2a00a968473b7bf86e098e4cbbe8a5776346944c9dd067b7cf71c4c993d544e