Malicious PDF — malware analysis report

Static analysis result for SHA-256 9263f1612a5ac504…

MALICIOUS

PDF

90.6 KB Created: 2021-07-19 06:57:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 6d15f66eea4fc3ead837f5facc681cb7 SHA-1: e8a0d7912adb6bd71ffaa87c80f68af4cfa93d4c SHA-256: 9263f1612a5ac5047e28aae7c620cd5b372271ceb4ef9986000826bfb39c5189
156 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It functions as a link farm, containing numerous URLs that point to compromised WordPress sites and other disposable hosting. These links likely lead to further malicious content or phishing pages, aiming to trick users into downloading additional malware or divulging sensitive information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9924

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://mygamedaysports.com/wp-content/plugins/super-forms/uploads/php/files/254dd1009bcca6e3fc8973d2317e6ae5/kuvoxon.pdf
    • https://vildmarksjagt.dk/userfiles/file/kimepugeduridifanap.pdf
    • http://www.miamiairportlimo.net/wp-content/plugins/formcraft/file-upload/server/content/files/160cbe5d6e02de---temadagufajorek.pdf
    • https://haps.company/wp-content/plugins/super-forms/uploads/php/files/hashdif6l7s8rsd2iij98hlpu1/misaxajezufenowage.pdf
    • http://mikailang.net/userfiles/file/20210516163745_627696444.pdf
    • https://gencshow.com/upload/ckfinder/files/zifivumelojogenesabiwe.pdf
    • https://sasalidayanisma.org/uploads/file/29563426669.pdf
    • https://gccpay.net/wp-content/plugins/super-forms/uploads/php/files/b6f334f42ff45a81602bab7d8f07872b/15098090665.pdf
    • http://rasmesafar.net/basefile/basefiles/55323187995.pdf
    • https://janeunchained.com/wp-content/plugins/super-forms/uploads/php/files/tsnu1a9c62eane53t7vkv3c4m8/fixedabogefozanojajo.pdf
    • https://sieompaysdebray.fr/lesiom/txt/imgadmin/file/34644236468.pdf
    • http://www.advancedevents.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a9c8ad83ff5---mipuriboletonavabe.pdf
    • http://matchonusa.com/uploads/files/80400725926.pdf
    • http://xn--54-dlcdkamdj4btild5b.xn--p1ai/ckfinder/userfiles/files/85404027162.pdf
    • http://penoplex24.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160b24716843a8---venejosoduruvazo.pdf
    • https://www.msolartop.cz/wp-content/plugins/formcraft/file-upload/server/content/files/1609858f422992---fopogefebu.pdf
    • http://bracyfamilyreunion.com/clients/c/c2/c2db1a97f769835965582c74015c7782/File/tisovute.pdf
    • http://myhomeinparis.com/userfiles/files/korosekuk.pdf
    • http://axiomestates.com/userfiles/file/vafuvomuzodiru.pdf
    • https://www.simcoerecovery.net/wp-content/plugins/super-forms/uploads/php/files/bggsol67bbkicdu7ql11rf8sir/8068540419.pdf
    • http://www.colegiometa.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/160af23d0aaae0---56901295713.pdf
    • https://torrentclub.vip/wp-content/plugins/super-forms/uploads/php/files/2l1jitb8l7eekts7sorjr0kuob/903700747.pdf
    • http://www.absolutecateringla.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082dfe36a397---nevuxujuposut.pdf
    • https://autoprofi.ua/userfiles/file/riribol.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=squint+eye+meaning+in+telugu
    • 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_off0000e425.bin
e4e56d606dc5f580bdcc916d41bda8d253753f0c5ccca39275785bafc30b4b7d
pdf-font-stream PDF embedded font (sfnt) at offset 0xE425 18360 bytes
font_01_sfnt_off000113c5.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x113C5 16792 bytes
font_02_sfnt_off00012bd6.bin
af6352c6d9b0e605407c38fa74e817a8d81e4c92f12c4f8e92d0996264b0d156
pdf-font-stream PDF embedded font (sfnt) at offset 0x12BD6 17100 bytes
font_03_sfnt_off00014516.bin
2bb17446f1a05470c8631b6688462e434a17bb3613398a88e7d7d28865be4888
pdf-font-stream PDF embedded font (sfnt) at offset 0x14516 10500 bytes