Malicious PDF — malware analysis report

Static analysis result for SHA-256 d541594d18dcfec0…

MALICIOUS

PDF

83.2 KB Created: 2021-06-11 10:48:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: be85a62b9a179e9e8c659ed3ac302935 SHA-1: c142fb32f43d265f6cf7172a186b99dc46b52a66 SHA-256: d541594d18dcfec0c10a35c8934f38761825b0467b8fe01f9a937d68d0d52039
164 Risk Score

Malware Insights

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

This PDF document is identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan distribution attempt. It contains numerous links to compromised WordPress sites and disposable hosting, likely serving as a link farm to lure users into downloading further malicious content, possibly related to 'Play tamil 2019 movies'. The presence of a visual download button further supports the phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://garglob.ru/uplcv?utm_term=playtamil+2019+movies
    • https://glowskincare.net/wp-content/plugins/super-forms/uploads/php/files/c5d7ca4c74ff79862802305ebe2f5bfc/joputumupareb.pdf
    • http://www.thelawchamber.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607412ffeab81---wolosofunikoluxesadizul.pdf
    • https://mls.lighting/wp-content/plugins/super-forms/uploads/php/files/6cfcc3bf6f69c98c4f4f1392067ccc99/57430335886.pdf
    • https://glosunspa.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089d036912bf---xukorifekitikovutobaxej.pdf
    • https://maydongy.com/wp-content/plugins/super-forms/uploads/php/files/bbi2019tddudgo2dap241c6hqc/bunasugukepujudozop.pdf
    • https://e-lightingcontrols.com/wp-content/plugins/super-forms/uploads/php/files/e9531aae9af6fcc87c845a73c742611f/gifabusovapitukudot.pdf
    • http://booklandbooks.com/userfiles/file/71436497053.pdf
    • http://www.telsercom.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093e8da0a575---68969946979.pdf
    • http://www.sphotobooth.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f305b246ae---texetisu.pdf
    • https://ewms.vn/wp-content/plugins/super-forms/uploads/php/files/13br6h2ppaef00p6kp9a98u5ou/vinopojurigexopunikikugi.pdf
    • http://theydeserveastamp.org/wp-content/plugins/formcraft/file-upload/server/content/files/16083ad5c6f6ca---woxodeke.pdf
    • https://dynasty888.com/image/files/20210608_234813.pdf
    • http://www.mtpartnersfl.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9f9a5fb7a---gadavenovokebiwide.pdf
    • https://finestblogger.de/wp-content/plugins/super-forms/uploads/php/files/2uolqjm60ba3k79iaocq3720an/mufupu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000104e6.bin
21604310653ba670538bba8d257093dd295eb00570ba3f187d9c8ac4892492ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x104E6 5380 bytes
font_01_sfnt_off0001172f.bin
4ed071925e906f9a4da32a11bbd0fe067783f68059b50cb51e94af890090fc17		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1172F 11652 bytes

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