Malicious PDF — malware analysis report

Static analysis result for SHA-256 922b2ef499e84aae…

MALICIOUS

PDF

115.7 KB Created: 2021-06-29 22:34:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 29639dd1c7db97adce285fccbe8eeffb SHA-1: 1e0c24e10e0342ca0d18c3c99e42a1b99644077d SHA-256: 922b2ef499e84aaee275563402bdee35b6e1dd4bc4310b37979bd69d9727b1c6
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous embedded URLs pointing to compromised WordPress sites and disposable hosting, suggesting a phishing or malware distribution scheme. The presence of multiple external URIs and link farms indicates an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9966

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://wastran.ru/uplcv?utm_term=the+golden+compass+pdf PDF link annotation
    • http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/160838ef07c08e---xasisasawigu.pdfIn PDF document text
    • http://traiteur-ribot.fr/userfiles/file/nupupodibetidutes.pdfIn PDF document text
    • https://asigurareingermania.ro/wp-content/plugins/super-forms/uploads/php/files/q2v5acslh5okd4gmc3v4haofl1/39242612979.pdfIn PDF document text
    • https://www.sesc.com.ua/wp-content/plugins/super-forms/uploads/php/files/p49c1rv9abindanb1l0c72ins0/setelikoroxez.pdfIn PDF document text
    • https://lightingsystemscol.com/wp-content/plugins/super-forms/uploads/php/files/585ccc84db3b24a64a9ee0ca6d16adf1/jovuwilexi.pdfIn PDF document text
    • http://bensonlandscape.com/editorData/file/28531730105.pdfIn PDF document text
    • http://newdimension.su/userfiles/file/79647554257.pdfIn PDF document text
    • https://earthchartercities.org/wp-content/plugins/formcraft/file-upload/server/content/files/16088089472673---xenusegubozis.pdfIn PDF document text
    • https://arizonapoolcontractor.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2dc01e3de0---56385472614.pdfIn PDF document text
    • http://www.socalgreatwhite.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c4f5fb71a8---11808901726.pdfIn PDF document text
    • https://majubesar.info/contents//files/govudovizinila.pdfIn PDF document text
    • http://www.veronicaneal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/160c56b795c62e---45068403004.pdfIn PDF document text
    • https://tehnol.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160827241c150e---77127240399.pdfIn PDF document text
    • http://sip7.online/wp-content/plugins/super-forms/uploads/php/files/e11bb42119ccc0d2564f901931938caf/88316418002.pdfIn PDF document text
    • https://acronimocostanzo.com/userfiles/file/74846778607.pdfIn PDF document text
    • http://dabien.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/1607af46403c76---20220384634.pdfIn PDF document text
    • https://aradovan.com/userfiles/file/kunibamuzopibusanenazito.pdfIn PDF document text
    • https://aspaeng.com/files/image/files/9204962743.pdfIn PDF document text
    • http://www.fullertherapy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607594b020067---xizapifivenaverurizi.pdfIn PDF document text
    • http://axwelindia.com/uploads/70734033693.pdfIn PDF document text
    • https://www.gml.de/wp-content/plugins/formcraft/file-upload/server/content/files/160ad048b7412a---jekepufefuwigube.pdfIn PDF document text
    • http://barudan.hk/UploadFile/file/20210606052036516.pdfIn PDF document text
    • 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_off0001624b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1624B 18072 bytes
SHA-256: 2d801d2db850ed5982071ee4e4a8c37bf91af79d1fc3f8c6aa9e81c7e4358f99
font_01_sfnt_off000191b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x191B1 10740 bytes
SHA-256: 1252fa7c20e45db51adb53ad05fbf8768f4f19d5494568fe79849a7655aa7873
font_02_sfnt_off0001a9f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A9F7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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