Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc6332e0194864be…

MALICIOUS

PDF

74.9 KB Created: 2021-09-20 05:45:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: f10c83e0b4b3e7d24f24211f3cfd7719 SHA-1: 65444aac812fcafa153f81909c5649e468d07a25 SHA-256: cc6332e0194864be950862ee2c6088e4ba3c9fef34b925a7c3e07da9bb3a44a5
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm or SEO poisoning tactic. The embedded URLs are likely used to redirect users to malicious sites for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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://clearpatth.com/userfiles/file/48790772117.pdf
    • https://suruburi.net/mm/file/88172606772.pdf
    • https://panelshock.com/userfiles/file/zigaxaxojitagiwobudewi.pdf
    • https://www.capitalroofingct.com/wp-content/plugins/formcraft/file-upload/server/content/files/16131822085d43---fiveliduwegaloxiro.pdf
    • https://mtmnetwork.net/uploadEditor/files/73749256005.pdf
    • https://xn--80aaa1anac6cg.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/76993c1ece95c8791662a2e056568b72/52125402305.pdf
    • http://2017.letnifestiwal.pl/ckfinder/userfiles/files/49706238939.pdf
    • http://buyo-g.net/userfiles/file/34338282876.pdf
    • http://ccshecea.org/upload/files/33679646030.pdf
    • http://savitaco.com/uploads/images/files/foveromexupifuv.pdf
    • http://ipvoicenj.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613bfc364aeaa---79205487154.pdf
    • https://rajnnuhiddje.se/userfiles/file/ziwixejawaramipewibolaxo.pdf
    • https://www.officinadelgustoroma.com/wp-content/plugins/super-forms/uploads/php/files/4ba80b5fe2b2b0dbfd430fe3d72db190/57623912947.pdf
    • https://glozor.com/userfiles/file/8933953663.pdf
    • http://biznesfishki.ru/files/userfiles/files/pirewamuxiwaz.pdf
    • http://midospa.com/upload/files/79695394107.pdf
    • https://shunnasato.com/sazizesusetemot.pdf
    • http://caythuocnam.org/images/files/35710885847.pdf
    • http://liubeauty.com/luutru/files/loxugogosijibegota.pdf
    • http://kapfenberger-schuetzenverein.at/userfiles/file/votabitej.pdf
    • http://garantc.ru/userfiles/file/wivobeze.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=how+to+change+icon+size+in+miui+11
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c140.bin
62fb578ccc7bb39378c5b1b8a1aee545de8c5ac510cfb1e276918880a7d9c383		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC140 10820 bytes
font_01_sfnt_off0000da2d.bin
feb94de763fad7cd5733483e20be373f2e348f38b0d016b5fae8105389edf06c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDA2D 17092 bytes
font_02_sfnt_off000105de.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x105DE 16792 bytes

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