Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe64bd38db25cdb5…

MALICIOUS

PDF

92.1 KB Created: 2021-07-13 14:41:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: ad8b81a8213496a95391d71060b5a130 SHA-1: f5038f33f1fb8867a7c47be08a34156a20d40f6b SHA-256: fe64bd38db25cdb55c95b7384c32153f433b6506c44c06288f6b9a2f56ae467a
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The file functions as a link farm, containing numerous URLs pointing to compromised WordPress sites and disposable domains. These links are likely intended to lead users to phishing pages or download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9822

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 http://ngor2-3.com/file_media/file_image/file/zezajuxejawanezulikebe.pdf In PDF document text
    • https://www.peeryhotel.com/wp-content/plugins/super-forms/uploads/php/files/756ee377061789aea311ab5d65175e77/dusizokir.pdfIn PDF document text
    • https://shared401k.com/wp-content/plugins/super-forms/uploads/php/files/a08fbe32e247843831195219716e7ea9/22096033690.pdfIn PDF document text
    • http://dtpokebar.com/uploads/files/gurulemivefawi.pdfIn PDF document text
    • https://strechybenesov.cz/content/saludemejo.pdfIn PDF document text
    • https://westcoastmovers.ca/wp-content/plugins/super-forms/uploads/php/files/gnqac5gjq081mad5k22v0q3p4t/losidumowokarakaxakaburid.pdfIn PDF document text
    • http://reklamavysocina.cz/UserFiles/File/mafakuv.pdfIn PDF document text
    • https://joyfool.art/wp-content/plugins/super-forms/uploads/php/files/ee3c44de030adf7c26a87faa4c1a2369/9183919132.pdfIn PDF document text
    • http://trenermichal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16097659eb5178---revujurubazowiferixuper.pdfIn PDF document text
    • http://thueotodn.com/uploads/image/files/wozewomiteneze.pdfIn PDF document text
    • http://fructusartis.com/i/File/wagejib.pdfIn PDF document text
    • https://www.simcoerecovery.net/wp-content/plugins/super-forms/uploads/php/files/0njkjq6rv93gct9j3847pn35b4/rifelerixiz.pdfIn PDF document text
    • https://cafemocion.com/userfiles/file/wanipopexubadadapopexi.pdfIn PDF document text
    • http://minhtoangalaxyhotel.vn/app/webroot/files/ckfinder/files/forexipikodejalovi.pdfIn PDF document text
    • https://vakukh.ru/wp-content/plugins/super-forms/uploads/php/files/155df4d60959bf9878b217fa69a89807/nonixinefelefo.pdfIn PDF document text
    • http://www.adanakursmerkezi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c2e127acfa---befugasajazupo.pdfIn PDF document text
    • https://msr-hudsonproperties.com/wp-content/plugins/super-forms/uploads/php/files/9136a334156190329db5b2e59a023454/wojova.pdfIn PDF document text
    • http://ateliergermain.net/sites/default/files/file/rifevorit.pdfIn PDF document text
    • https://inchiriereelicoptere.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160bbcccf8eb6a---wosikodis.pdfIn PDF document text
    • https://staffxrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/e2cffec99faef9141789862d0e164120/jenegujajonavojebog.pdfIn PDF document text
    • http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/1b89bfa81100a1fb831a11370ba7767c/tinesipejorelukezugipami.pdfIn PDF document text
    • https://rajaketiga.com/contents//files/gezubowe.pdfIn PDF document text
    • https://infravoip.com/wp-content/plugins/super-forms/uploads/php/files/8fa2492ab823b0ed6006c01542ad78db/71790928653.pdfIn PDF document text
    • http://csc0451.com/userfiles/file/20210708063738_x2sc6e.pdfIn PDF document text
    • http://aytekinpolatel.com/image/files/2236591925.pdfIn PDF document text
    • http://aaexpansionjoint.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b3c9f7a18d1---vesugusa.pdfIn PDF document text
    • http://mko-yug.ru/wp-content/plugins/super-forms/uploads/php/files/c9d6afc924b654dde61eea8ebba25e4d/87864802358.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=indian+height+weight+chart+according+to+age+in+kgPDF 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_off0001057d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1057D 17236 bytes
SHA-256: 5757b6c4a236b69ed00051fb47f346d4960014dbbcf38c658cbcca3ffda63501
font_01_sfnt_off000132ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132AB 10564 bytes
SHA-256: 1637a3f9c346cd891913955183c8903880089b6525298fc5b22a2087b61743a1
font_02_sfnt_off00014a87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14A87 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1