Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa47cc367f19af96…

MALICIOUS

PDF

80.2 KB Created: 2021-06-29 02:36:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 3821f38c001decb101ad62f954751555 SHA-1: d4abe05eb8a941fcf3c1b3bec69160a7791745bf SHA-256: aa47cc367f19af9645d350de69bbc94f3305a8c98164664d5b5a24477c7a8256
172 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV detecting it as a phishing trojan. It contains a link farm pointing to compromised WordPress upload storage and other disposable hosting, likely intended to trick users into downloading further malicious content. The presence of urgency and download button lures further supports a phishing or social engineering attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

Heuristics 8

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://whiteplacard.com/UserFiles/file/satavadunapizu.pdf
    • http://xn--80akij1ajew.xn--p1ai/wp-content/plugins/formcraft/file-upload/server/content/files/1607e40a146159---ruguwakoxujemon.pdf
    • http://legendtec-eg.com/wp-content/plugins/super-forms/uploads/php/files/hk5selibt5f3pt9clacqcg9ll1/51944908178.pdf
    • http://autoshiftbid.com/fckeditor/userfiles/file/44075750706.pdf
    • https://lightsourceindiana.com/wp-content/plugins/super-forms/uploads/php/files/2062c61b16572a9e1db2440db324fde2/jiretixapupon.pdf
    • http://sys-svinding.dk/userfiles/file/2837727107.pdf
    • https://www.frankcapassoandsons.com/wp-content/plugins/formcraft/file-upload/server/content/files/160763909de731---91592477252.pdf
    • https://penzionradvanice.cz/res/file/16605499596.pdf
    • https://airflow-skateboards.com/upload/file/tabopapazenumedikore.pdf
    • http://churchliferesources.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b3046879389---bodibaxokanibap.pdf
    • https://morethancleaningservices.com/wp-content/plugins/super-forms/uploads/php/files/6c2c8e849b65583aad5285f61ed3798c/wokopamo.pdf
    • https://riverasphotovideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160786a49179a4---zekarawukupogena.pdf
    • http://grani-tonkogo-mira.ru/wp-content/plugins/super-forms/uploads/php/files/94b418a403988c6456ecec2bb6cdc909/sinekovegobirola.pdf
    • http://www.hkqi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160859c765aa51---96944166052.pdf
    • https://marigabung.com/contents//files/lijum.pdf
    • https://mmszke.hu/files/file/73033424743.pdf
    • http://msci.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/1607ba21d558c2---rodojijopovexu.pdf
    • https://sipsib.ru/wp-content/plugins/super-forms/uploads/php/files/10e3d9d45020f782a34ee2f967d2fb56/toraru.pdf
    • http://uniondeautoescuelas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607485389a0a4---14939907943.pdf
    • http://smithmurdock.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a30dcccc0ab---wanagubejagenirubefubajuk.pdf
    • http://jointrilogy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606eeed3204aa---moteporuxaxafagakifo.pdf
    • https://yidinfo.net/wp-content/plugins/super-forms/uploads/php/files/deflchi8p9qmlj7om9es0m3d2b/40652445557.pdf
    • https://frontiersneurophotonics.org/wp-content/plugins/formcraft/file-upload/server/content/files/1/16079f27389fee---gavoxaposeziv.pdf
    • https://alphaveneers.co.uk/wp-content/plugins/super-forms/uploads/php/files/e5ad91243b4bc5f7923831db5d7120b2/35656736157.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=123movies+the+lodge
    • 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_off0000d56d.bin
c047c4bece95a87fa47d99f630a7596417152a6450776e85358b7a90d63f9644
pdf-font-stream PDF embedded font (sfnt) at offset 0xD56D 10644 bytes
font_01_sfnt_off0000edaa.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xEDAA 16792 bytes
font_02_sfnt_off000105bc.bin
c809ab3b62c0773900e222fcaec199d959309c3b05d659c6c1ebde400a53c8ac
pdf-font-stream PDF embedded font (sfnt) at offset 0x105BC 17492 bytes