Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a6176c7ce978b53…

MALICIOUS

PDF

90.8 KB Created: 2021-06-29 09:30:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 596a16bd20b568772fab47225bbd6600 SHA-1: 7b769d16fd585a1491a518813b5c037e7003a2de SHA-256: 1a6176c7ce978b5328c649ba5007bfa9a0b72a20aa0b032108d3757332540f6c
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm pointing to compromised CMS upload storage and disposable hosting, suggesting it's designed to redirect users to malicious sites. The embedded URLs and the nature of the link farm indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9932

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://gaseg.com/wp-content/plugins/super-forms/uploads/php/files/oc2fckbspgtvtqmo8nolr848k1/fivepidikakagerolajisawi.pdf
    • http://www.deadclan.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16097f4e65e4cb---jazipifenonobefij.pdf
    • http://gtlmarinefuel.com/userfiles/file/10742179847.pdf
    • https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/475494b1bd854f831322441044dcadb1/15190862951.pdf
    • https://moscowfashion.net/content/xuploadimages/file/81914129650.pdf
    • http://hattrick-sports.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ffe650c1d9---67770723712.pdf
    • http://wingprocess.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/medufepakiwulosutakixol.pdf
    • https://www.areatransfers.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083685d09e92---fuluwogupizasula.pdf
    • https://storage-in-motion.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b530d42aae1---pozukowekiwaporiwoto.pdf
    • https://luyenthitoeic.info/userfiles/file/4698140042.pdf
    • https://georgiamusicpartners.org/wp-content/plugins/super-forms/uploads/php/files/a298565f07d0ecfa13ce62fc4e8d4b18/80118089628.pdf
    • http://ezibra.pl/upload//file/lavepajoveluxetigejalib.pdf
    • http://sistersaviopublicschool.com/userfiles/file/283339575.pdf
    • https://www.ayersworthglen.com/wp-content/plugins/formcraft/file-upload/server/content/files/160984a565d31a---59451182418.pdf
    • http://in-dapt.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c012b25c84f---87362805631.pdf
    • http://myjobcareer.net/userfiles/file/2021060117451673499.pdf
    • http://ehhs1969.com/clients/6/67/67a0fa02f482ea8575b7cec7429e43a8/File/49141476310.pdf
    • https://nscs.org/wp-content/plugins/super-forms/uploads/php/files/92da8158d969187a6538fb58d65aec54/58419047974.pdf
    • https://www.charityweiss.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609d5c3ac4745---jiwuregigoxazafidi.pdf
    • http://uniondeautoescuelas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9e8bc4c8f3---5216410227.pdf
    • https://118highschool.am/wp-content/plugins/super-forms/uploads/php/files/56c69a821508aa07bc07f78b24b8341b/80287298469.pdf
    • https://frennphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bbc7d27e872---koxaxonejivebadedakedoli.pdf
    • http://amtusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085d1b4d5c5b---74440392291.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=felled+tree+meaning
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec80.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC80 16792 bytes
font_01_sfnt_off00010497.bin
9b8f122d4b0e469caa258a2f0e79322af833ac96501d2627ebe5ea323ee32ca1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10497 10280 bytes
font_02_sfnt_off00011b5f.bin
5e91d3160ceb1fc13bb5550d8f4a7928ba3809d63cdcddd895a2b5af9cf38184		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11B5F 16948 bytes
font_03_sfnt_off00014737.bin
6bc4420bbfa61156f096b6f0725168f8601d7500e332933a6f3144c23c09a2fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14737 16384 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.