Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed4f392ab9bab774…

MALICIOUS

PDF

84.2 KB Created: 2021-09-05 20:44:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 65494989e2ef86957704365afaf1e5f7 SHA-1: d0bcec524cdd08432f98b1a0d36d84e0a92ce0d2 SHA-256: ed4f392ab9bab774d9e17bfd029e6e0abc948f4e7b10824cdadd63467794539c
156 Risk Score

Malware Insights

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

The file was identified as malicious by ClamAV and an ML classifier, with heuristics indicating it functions as a link farm. Multiple URLs point to compromised CMS uploads and disposable hosting, suggesting an attempt to distribute malicious content or phish users. The PDF structure and embedded links strongly indicate a phishing or malware distribution vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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://rebates.forex/wp-content/plugins/super-forms/uploads/php/files/aokra43eo9obmgnraqljbmiio5/88104669662.pdf In PDF document text
    • http://adhdadvisory.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076f9373e998---nokosokevedumojewunige.pdfIn PDF document text
    • http://systemsbiology.at/uploads/assets/file/79669243530.pdfIn PDF document text
    • http://milcontabil.com.br/wp-content/plugins/super-forms/uploads/php/files/8rpqg1p3ugt23nv683t0g8h3m2/lokiti.pdfIn PDF document text
    • http://netdepphunu.vn/images/userfiles/file/60064189184.pdfIn PDF document text
    • http://tinhdaurosa.com/Images_upload/files/80326868836.pdfIn PDF document text
    • http://www.gametimecatering.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b24cdaaafa1---65412828890.pdfIn PDF document text
    • http://www.hj-bouwt.be/wp-content/plugins/formcraft/file-upload/server/content/files/160855e24c0c89---57614903652.pdfIn PDF document text
    • https://www.cfo-search.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a69d6d2b9d7---binitejibatum.pdfIn PDF document text
    • http://xn--80aaeiengkwpz6p.xn--p1ai/pub/file/19985280574.pdfIn PDF document text
    • http://bouncebodysupplements.com/newerac2c/userfiles/file/34585847387.pdfIn PDF document text
    • https://rieker-consulting.eu/files/file/93282683273.pdfIn PDF document text
    • https://mygoaltv.com/ipp/images/uploads/files/manijof.pdfIn PDF document text
    • http://lexen.ca/userfiles/files/54885361912.pdfIn PDF document text
    • http://hkacca.com/userfiles/21008674277.pdfIn PDF document text
    • https://wodgluch-projekt.pl/userfiles/revuwogemu.pdfIn PDF document text
    • http://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/2f47a45b7acc407dc0d9bd5c7578fd76/nimesexagezisiw.pdfIn PDF document text
    • http://camel-republic.com/media/userfiles/files/keburaworezefo.pdfIn PDF document text
    • http://stagelight.pl/userfiles/files/polobasefivefi.pdfIn PDF document text
    • https://www.rogierstoel.nl/wp-content/plugins/super-forms/uploads/php/files/ote3uifnj8g0c4tg0liasn04ng/6159622963.pdfIn PDF document text
    • https://www.charityweiss.de/wp-content/plugins/formcraft/file-upload/server/content/files/16082e99c40c20---64098696516.pdfIn PDF document text
    • https://morganmethod.com/ci/userfiles/files/kedikig.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=manual+testing+interview+questions+for+3+to+4+years+experiencePDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e395.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE395 11512 bytes
SHA-256: e180542b4fad6dd3cc13e6e587cd6bb32a12a9daea45f196bd5d78091d3eb9f8
font_01_sfnt_off0000fede.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEDE 17040 bytes
SHA-256: fdf3306e58f6de4f78f9e169260171892d47f83dbce5e1214573f0a1a6e2d65a
font_02_sfnt_off00012ac5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AC5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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