Malicious PDF — malware analysis report

Static analysis result for SHA-256 c89c345279780c93…

MALICIOUS

PDF

75.7 KB Created: 2021-06-30 09:05:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: a92fa83004cdb8169ebfa03e21d02a9a SHA-1: 5ac320b7df3bbe9b2ebc15f58c2e6a843075b3e7 SHA-256: c89c345279780c9316313b7de076fd604ae74c6b8f2cfe9d3a8c0dff34f586b6
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF was flagged by multiple heuristics and an ML classifier as malicious. It contains numerous links to compromised websites and disposable hosting, suggesting a phishing or malware distribution lure. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the heuristics indicate an attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

Heuristics 6

  • 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.
  • 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://www.azulejositurry.com/wp-content/plugins/super-forms/uploads/php/files/6u41lkmd6j3pll7co7cvgu2b76/temozosuverawixenumonu.pdf In PDF document text
    • http://npas.ru/pic/file/13986175780.pdfIn PDF document text
    • http://www.anclupnapoli.it/userfiles/file/pedorezo.pdfIn PDF document text
    • http://dolphinegypt.net/userfiles/file/19216158384.pdfIn PDF document text
    • https://bellevuecommunityfoodbank.org/wp-content/plugins/super-forms/uploads/php/files/76f8a95fef8a5b85315e137f383fcd2c/53048602316.pdfIn PDF document text
    • https://almondzwealth.com/administrator/imagetemp/file/61199997450.pdfIn PDF document text
    • http://www.barankayalar.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160c4d9d62fa4a---zidokekajabusidogufudefe.pdfIn PDF document text
    • http://tscyw.net/userfiles/file/20210611125915_khmljt.pdfIn PDF document text
    • https://acryl-bg.com/userfiles/file/4879392097.pdfIn PDF document text
    • https://dungcuruamui.com/wp-content/plugins/super-forms/uploads/php/files/vkghj12rdc24d3ssmlndtrmedv/91432615555.pdfIn PDF document text
    • https://koetec.com/home/~ptow/public_html/ckfinder/userfiles/files/93710640214.pdfIn PDF document text
    • http://gostium.com/wp-content/plugins/formcraft/file-upload/server/content/files/160938226d96bb---88316682289.pdfIn PDF document text
    • http://buildinggodskingdom.com/webcms/file/94125255405.pdfIn PDF document text
    • http://b-solutions.net/userfiles/file/37953367386.pdfIn PDF document text
    • http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/9e6b3f0f359089532d416f7245387049/35356947272.pdfIn PDF document text
    • https://xn--78-6kce7dfhb9dwb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/7f557e8b1ea94794de242467c66383e3/gigasise.pdfIn PDF document text
    • http://www.shipsupply.co.mz/wp-content/plugins/formcraft/file-upload/server/content/files/1608b41bc23977---18336996611.pdfIn PDF document text
    • http://st-communications.com/ckfinder/userfiles/files/34473714287.pdfIn PDF document text
    • http://euro-ex.com/22700067119.pdfIn PDF document text
    • http://www.skupp.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160a37c4fac327---28613185701.pdfIn PDF document text
    • https://cleaner.pl/userfiles/file/24988114217.pdfIn PDF document text
    • https://choiceenergynetwork.com/wp-content/plugins/super-forms/uploads/php/files/c9ca72b780923c279772f5291170ed0b/42427294539.pdfIn PDF document text
    • https://evocative.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16086ca89ca80d---80014847973.pdfIn PDF document text
    • http://zjqzzx.com/uploadfile/file/2021061114513273499.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=sine+and+cosine+of+complementary+anglesPDF 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_off0000c433.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC433 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000dc4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC4A 11152 bytes
SHA-256: fce2470189094cffbddc7e0455341d797344c69f8b17182b8ddffcd92106740a
font_02_sfnt_off0000f618.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF618 16544 bytes
SHA-256: 3a5e094b67e986b971fb395ac2dafccd8b8711bdbf1de863c816eb2cf566a464

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