Malicious PDF — malware analysis report

Static analysis result for SHA-256 32301b7f4a21f06f…

MALICIOUS

PDF

80.4 KB Created: 2021-09-19 09:53:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 68dc3ee8d9b974e6934e88624c40ae55 SHA-1: d8bed1b8fde38780805d10db1f75df95268971cd SHA-256: 32301b7f4a21f06f7b92c3edff186f6bbe3bd75d9f68d8af01d664985ab44887
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is a PDF file flagged by ML classifiers and ClamAV as malicious. It contains numerous embedded URLs pointing to various domains, many of which appear to be link farms or disposable hosting, suggesting a phishing or malware distribution campaign. The presence of external URIs and the ML classification strongly indicate malicious intent, likely involving directing users to compromised or malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://smidgel.ru/uplcv?utm_term=smtp+port+o365 PDF link annotation
    • http://chapaconoticias.com/assets/ckfinder/core/connector/php/uploads/files/tiduni.pdfIn PDF document text
    • http://paykaaluminiya.ru/ckfinder/userfiles/files/50132755646.pdfIn PDF document text
    • http://jjw-led.com/userfiles/file/20040307244.pdfIn PDF document text
    • http://gpp300.fr/userfiles/file/viwufawosib.pdfIn PDF document text
    • https://kvgrup.com.ua/wp-content/plugins/formcraft/file-upload/server/content/files/16143897eac0c1---xitafujavaxubawev.pdfIn PDF document text
    • http://mylodge-naoshima.com/24131652120.pdfIn PDF document text
    • https://tourpon.kr/FileData/ckfinder/files/20210905_9896357F03DC62E9.pdfIn PDF document text
    • http://viaterrestre.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16138aff752ecc---perepanelotakubemexosari.pdfIn PDF document text
    • http://xn--80aaaaadfwa5aftjhxrkcrg8iwc.xn--p1ai/pict/file/30985299661.pdfIn PDF document text
    • http://connect-event.fr/ckfinder/userfiles/files/jaxosubogegujalobekubo.pdfIn PDF document text
    • https://27061010.com/uploads/files/202109190117055103.pdfIn PDF document text
    • https://datenglagi.com/contents/files/mexamenubapudupumela.pdfIn PDF document text
    • https://www.tri-or.fr/tri-or/ckfinder/userfilesfiles/gonojube.pdfIn PDF document text
    • http://progfin.pl/userfiles/file/zisewisexedejogaliwut.pdfIn PDF document text
    • http://platypusspot.org/uploads/ckfinder/userfiles/files/gatojepog.pdfIn PDF document text
    • https://cam-ceeds.org/ckfinder/userfiles/files/13567102187.pdfIn PDF document text
    • https://mackbeks.com/files/file/89190633858.pdfIn PDF document text
    • http://rebeccafantarchitetto.it/userfiles/files/65371908232.pdfIn PDF document text
    • http://ladna.pl/user_images/file/42138955012.pdfIn PDF document text
    • http://movitecnic.fr/ressource/site-image/files/45420883008.pdfIn PDF document text
    • http://tongchangkj.com/uploadfile/file///2021090817330339.pdfIn PDF document text
    • https://krantiservice.com/ckfinder/userfiles/files/kalutugu.pdfIn PDF document text
    • http://arnoldbolingbroke.com/ckfinder/userfiles/files/vesavirul.pdfIn PDF document text
    • http://ing-ka.com/user_img/file/42033712762.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_off0000d4d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4D5 18536 bytes
SHA-256: b23a26fe5695dc9442675c0a3468a3223d83b7b5b905389877ae541ecce3c5a1
font_01_sfnt_off00010562.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10562 10256 bytes
SHA-256: f033ee7066582fc115b7c1dc38bc0ffe6be2124f8c5439e8a37750b5123e7fe6
font_02_sfnt_off00011c79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C79 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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