Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c7c08396270fdb5…

MALICIOUS

PDF

80.6 KB Created: 2021-09-02 06:00:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: eec254bfc0d8c149e0c9004031f27c7f SHA-1: 91fca99c3640d037c4a87b416079f8df9d173522 SHA-256: 7c7c08396270fdb5ec0ba56f20e921d2f20aa03310559fe0f670794f41042791
156 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high probability of malicious intent. It contains numerous external URIs and link farm patterns, with many links pointing to compromised WordPress upload directories and disposable domains. This suggests the PDF is designed to lure users to potentially malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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://drafthe.ru/uplcv?utm_term=how+to+get+force+pull+in+jedi+fallen+order PDF link annotation
    • http://plusbateria.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d4f9ec561e9---48872467470.pdfIn PDF document text
    • http://asbazainville.org/userfiles/file/79411475354.pdfIn PDF document text
    • https://tskrea.com/userfiles/file/rewalurezixatabuwajoxo.pdfIn PDF document text
    • http://nonstopsushi.com/uploads/files/14812064517.pdfIn PDF document text
    • https://terminarz.online/kosmetyczka/krakow/files/89302467433.pdfIn PDF document text
    • https://canvasations.com/wp-content/plugins/super-forms/uploads/php/files/83k0sjfb9jv2onm5413t17qgt7/noponaburesufajonej.pdfIn PDF document text
    • http://artpolinakuzina.ru/pict/file/54174947121.pdfIn PDF document text
    • https://enville.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b5c008b554d---19869472104.pdfIn PDF document text
    • http://zjbfjt.com/upload/files/50275308789.pdfIn PDF document text
    • http://goldmustang.com/files/files/rixinowobizibamomaloxo.pdfIn PDF document text
    • https://hohsingfiber.com/ufiles/files/buxarixefajoli.pdfIn PDF document text
    • http://airsoft1.ro/files/file/17823693741.pdfIn PDF document text
    • http://www.ecostroyservis.ru/File/12699309876.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073e4c0e162e---63374266814.pdfIn PDF document text
    • https://baoholaodong24.com/userfiles/file/guviwufak.pdfIn PDF document text
    • http://www.bestlifepolicy.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160ad02c3f074d---59339259315.pdfIn PDF document text
    • http://suportti.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082794f607f7---nigurubilunanukemirov.pdfIn PDF document text
    • http://dsraxys.com/uploads/kowisikerufafej.pdfIn PDF document text
    • http://woonhuislift.info/wp-content/plugins/formcraft/file-upload/server/content/files/16095f7dce3408---60004665069.pdfIn PDF document text
    • http://pelesiuvalymas.lt/i/File/makupupigupaduvubipozek.pdfIn PDF document text
    • http://absolutelyneon.com/userfiles/file/ronivem.pdfIn PDF document text
    • https://agilitynd.com/wp-content/plugins/super-forms/uploads/php/files/7dd721f69ffe93f4100e8a538bc5abb2/runigogegigikewebolives.pdfIn PDF document text
    • https://diversifiedhumansolutions.com/wp-content/plugins/super-forms/uploads/php/files/86a867f0a69f82d7a9db07fa8bd28848/wewulatezipodupoxumuno.pdfIn PDF document text
    • http://matthewsmillsreunion.com/clients/c/c7/c7863f7b93cb17915b2a89d887155530/File/72824789324.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_off0000d9ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9AB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f1bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1BD 16028 bytes
SHA-256: abd8c5473398680898815eae4a07541ac406e592a7c279d90f4be24b8bb98263
font_02_sfnt_off00011b3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B3D 10932 bytes
SHA-256: 854fa0f734e0c246622387ea1108f14f8d6783d57fec56648f2cba58450419dd

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