Malicious PDF — malware analysis report

Static analysis result for SHA-256 afce62c746b33f89…

MALICIOUS

PDF

103.5 KB Created: 2021-09-07 00:44:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 23edde5959cf4d4f03f4ea3e37416727 SHA-1: 892b07c19efc50d23cd9cad94c12e9e29bc85112 SHA-256: afce62c746b33f89b9559a73485b979ca27db6aaafeaf0cd4d3b1315ca36ab3a
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, with numerous embedded URLs pointing to compromised WordPress sites and other disposable hosting domains. These links likely lead to further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

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://catamma.ru/uplcv?utm_term=2019+veloster+n+owner%27s+manual PDF link annotation
    • http://gima.ge/admin/ckeditor/ckfinder/userfiles/files/31254667164.pdfIn PDF document text
    • https://shrmivirtual.org/wp-content/plugins/super-forms/uploads/php/files/a7f6cdf78177a83da7c77cb52fce0d15/pakodalewagamixovow.pdfIn PDF document text
    • https://alyosserspneed.com/userfiles/files/15168549759.pdfIn PDF document text
    • http://gabinetortodontyczny.eu/userfiles/file/92528578277.pdfIn PDF document text
    • http://cartopack.com/Images/file/88919709154.pdfIn PDF document text
    • https://www.hdontheroadnapoli.it/wp-content/plugins/formcraft/file-upload/server/content/files/1609c09c96cb53---58017767987.pdfIn PDF document text
    • http://pijntherapie.be/uploads/files/29925886235.pdfIn PDF document text
    • http://gesundezellen.de/neu/userfiles/file/kelaranawakedolazixiviv.pdfIn PDF document text
    • http://heureka-cz.eu/files/47848414085.pdfIn PDF document text
    • http://www.hotel-margherita.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080cbabaa280---nalakuludufifivuwirezo.pdfIn PDF document text
    • http://in-dapt.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080362a2674f---lizatofutiguzodo.pdfIn PDF document text
    • http://mousike.it/img_ins/files/78603469391.pdfIn PDF document text
    • https://jordanadams.com/ckfinder/userfiles/files/jagiwilajoserineli.pdfIn PDF document text
    • https://bdaudit.ro/userfiles/file/14947414730.pdfIn PDF document text
    • http://cafehinglung.com/uploads/files/98158282182.pdfIn PDF document text
    • http://ajisushionline.com/uploads/files/javodudemosuvodudexul.pdfIn PDF document text
    • http://clean-ecology.com/Upload/files/9961017817.pdfIn PDF document text
    • http://boxethai38.com/upload/file/51279542949.pdfIn PDF document text
    • http://www.melodypods.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608cc9fa5aa3e---71139823740.pdfIn PDF document text
    • http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/f0001a4686eafef5b48da531f444288c/17909325739.pdfIn PDF document text
    • http://www.bluefashion.cz/ckfinder/userfiles/files/moputawowogisedozepegolo.pdfIn PDF document text
    • https://atcotourismtravel.com/userfiles/file/fonato.pdfIn PDF document text
    • https://quickonboarding.com/wp-content/plugins/super-forms/uploads/php/files/3fe0b75faf368b4ee1abebd5dc74603f/gorofoxofisota.pdfIn PDF document text
    • http://islandpointfl.com/userimages/86308372876.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_off00012eda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12EDA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000146f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x146F1 10828 bytes
SHA-256: 61683d33dc95f26dc8359c80b53e1c9005a1f760054257413d8c36bade15f0d2
font_02_sfnt_off0001602b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1602B 18304 bytes
SHA-256: 48701457c02f16ee6643890df80f81b165f2a84292db33ba1b1a64f659dd614f

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