Malicious PDF — malware analysis report

Static analysis result for SHA-256 9abe692a6038bedb…

MALICIOUS

PDF

80.1 KB Created: 2021-09-17 22:49:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 8017910fe2f7b35898d761d8e79080a5 SHA-1: b8dc992af6ec18fbda06d29730de60a83e05fbfa SHA-256: 9abe692a6038bedbe2c5844f7cb86ef31cc4fbbae94d592183bbc652dc736163
156 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which are hosted on disposable domains or compromised CMS uploads, indicating a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. No scripts were extracted, and the document body was unreadable binary data.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9846

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://pixomot.ru/uplcv?utm_term=streamer+life+simulator+android+mod+apk PDF link annotation
    • http://www.impactit.in/ckfinder/userfiles/files/94499182554.pdfIn PDF document text
    • http://pp-aqua.com/userfiles/files/97734374497.pdfIn PDF document text
    • https://towa-aaa.jp/userfiles/file/govupik.pdfIn PDF document text
    • https://mytutr.com/wp-content/plugins/super-forms/uploads/php/files/faf0f17b0dd09b394c1dad74e79738e7/daxovanolixosisolujukana.pdfIn PDF document text
    • http://www.samuitns.com/image/upload/File/5219169454.pdfIn PDF document text
    • https://harpethvalleypto.org/wp-content/plugins/super-forms/uploads/php/files/39ea49d14f6e4bbbc6ed90835fcbc7fa/51761272486.pdfIn PDF document text
    • https://equinox-e.com/upload/files/fumumofasizelitoz.pdfIn PDF document text
    • https://hideab.se/tc/Mediagalleri/file/denevidevafa.pdfIn PDF document text
    • http://tottazo.com/userfiles/file/jonajufivavizowikaperomi.pdfIn PDF document text
    • https://lederstuehle-shop.de/ckfinder/userfiles/files/jetegeg.pdfIn PDF document text
    • http://vngo-cc.vn/cooker/public/files/lewunu.pdfIn PDF document text
    • https://cancelaria.pl/galeria/file/xefadumalulazebazi.pdfIn PDF document text
    • http://ssatripoli.org/userfiles/file/lenabinezuduradefa.pdfIn PDF document text
    • https://bursaceviritercume.com/wp-content/plugins/formcraft/file-upload/server/content/files/161361986dc2dc---11277046141.pdfIn PDF document text
    • http://norrlandet.se/userfiles/file/28294710847.pdfIn PDF document text
    • https://ms01bet.com/contents/files/56622010613.pdfIn PDF document text
    • https://chambres-lannion.fr/userfiles/file/50758434106.pdfIn PDF document text
    • http://domusanna.it/userfiles/files/jinezemikuta.pdfIn PDF document text
    • https://noks.cz/wp-content/plugins/formcraft/file-upload/server/content/files/16140907f128e4---maserogevisiwufuzufada.pdfIn PDF document text
    • https://scalper.ir/data/files/file/kidaganu.pdfIn PDF document text
    • https://xetnghiemadndanang.com/upload/userfiles/files/9026594785.pdfIn PDF document text
    • https://chrmglobal.com/userfiles/file/88207670619.pdfIn PDF document text
    • http://www.miamiairportlimo.net/wp-content/plugins/formcraft/file-upload/server/content/files/16132b535735f4---76886097412.pdfIn PDF document text
    • http://3xlove.com/uploadfile/file/4860299191.pdfIn PDF document text
    • https://makemycake.gr/wp-content/plugins/super-forms/uploads/php/files/j16o3g6psdt88ip8i4mq8o0kgm/98178138955.pdfIn PDF document text
    • http://medicaldistri.com/ckfinder_files/files/wunigonurebuturi.pdfIn PDF document text
    • 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_off0000d50a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD50A 10928 bytes
SHA-256: 50d6f638f8b19a38cee881e4a550335039d0815210d83f4673ed721fcff23e57
font_01_sfnt_off0000ee49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE49 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001065b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1065B 17132 bytes
SHA-256: 4d3ff50fd38c9e8d34348d1915b19bd9059c663d7bee99385bf5e0fb938aa298