Malicious PDF — malware analysis report

Static analysis result for SHA-256 eda70d6aa7b057a7…

MALICIOUS

PDF

110.7 KB Created: 2021-07-25 22:51:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: af1be7b7fef880a56e7e6436859762f7 SHA-1: 393f3e57b66908202a80bbd969b9da0b625256b7 SHA-256: eda70d6aa7b057a7896e542f53e86860e762fdac46216d7b52cec792879f9af7
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous links to external websites, many of which are hosted on compromised CMS uploads or disposable hosting, suggesting a link farm designed to redirect users to malicious content. While no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with phishing or malware distribution campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

Heuristics 6

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.adcgrain.com/wp-content/plugins/super-forms/uploads/php/files/555c75ab75660f78b3ff0b4e7e960ff2/53567399378.pdf In PDF document text
    • http://aberdeeneyes.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608572869cbfc---39352050288.pdfIn PDF document text
    • https://misbahelmudii.org/ckfinder/userfiles/files/xatekepunejuzutumarof.pdfIn PDF document text
    • https://xlux.vn/wp-content/plugins/super-forms/uploads/php/files/4fq3ajhtteprij9ij15o9efgv0/pavigagepipenove.pdfIn PDF document text
    • http://blessedfamilycovenant.org/clients/c/cb/cb727bc273eb4203dc66fb73741ae5ae/File/69543686618.pdfIn PDF document text
    • http://primaneighbors.com/userimages/36183457173.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b5a252e73e0---51934711285.pdfIn PDF document text
    • https://laplacedesstores.com/upload/file/xovojibulagad.pdfIn PDF document text
    • https://anmimar.com/royal/userfiles/file/99795613658.pdfIn PDF document text
    • http://score1forspencer.com/clients/4/45/4587145e2679cb7673d0e21b436e5c25/File/demixazuruxu.pdfIn PDF document text
    • https://its-bulgaria.bg/files/file/37134768796.pdfIn PDF document text
    • http://www.whirlpool-beachcomber.at/wp-content/plugins/formcraft/file-upload/server/content/files/1607f01ba7ce61---15826868345.pdfIn PDF document text
    • http://ipjanah.ir/wp-content/plugins/super-forms/uploads/php/files/b5hsdllrucbksj564loamcevc2/41322111399.pdfIn PDF document text
    • http://cartopack.com/Images/file/93398752749.pdfIn PDF document text
    • https://creativesilhouettes.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1608a21e7ceec1---10538171219.pdfIn PDF document text
    • http://thuephotocopytaihanoi.com/upload/files/21220723071.pdfIn PDF document text
    • https://nuttydog.hu/ckfinder/userfiles/files/zipijagilujaleruzegewule.pdfIn PDF document text
    • https://www.wizzfizz.com.au/application/third_party/ckfinder/userfiles/files/zoludonijudaxubabukurimet.pdfIn PDF document text
    • https://pacpartner.net/images_client//imagesfile/xoxusiv.pdfIn PDF document text
    • http://www.ibadirect.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607436efc37af---95802463136.pdfIn PDF document text
    • http://cdwy028.com/uploadfile/file/20210601160301.pdfIn PDF document text
    • http://brothersaluminium.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/1608509c253d69---magutevelisu.pdfIn PDF document text
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/k6h2cut0u63i5ss674qj7lrrh4/91635054236.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=diccionario+medico+veterinario+gratisPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001450c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1450C 20280 bytes
SHA-256: da8de5f5fc9373f89c969b09a87a333f8ad1f2025e63a7a8795fa7af57ca6394
font_01_sfnt_off0001797f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1797F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00019196.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19196 10736 bytes
SHA-256: 51f2842fcb41be6646ae5b9202f2b46f55af51f22490aa34e31174c41cc86a75

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