Malicious PDF — malware analysis report

Static analysis result for SHA-256 46c06e63e079f797…

MALICIOUS

PDF

80.7 KB Created: 2021-09-19 04:49:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-20
MD5: eb04ce293fc69329bae7767981278ef4 SHA-1: f9acf1394edda4c168cc83fc6b45ffaa185a0b04 SHA-256: 46c06e63e079f797f82811cd2a1b5979012f16c95de950e24f1f106d9ac4fc43
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. The heuristics indicate it functions as a link farm, directing users to multiple compromised WordPress sites and other domains, likely for phishing or malware distribution. The presence of external URIs and link farms suggests an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

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://catamma.ru/uplcv?utm_term=pakistan+vpn+server+apk PDF link annotation
    • http://paintingservicesonline.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16142fa0a488c1---sajadojabokowa.pdfIn PDF document text
    • https://www.novet.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613e85db0b683---zefipepebaforu.pdfIn PDF document text
    • https://iwistw.com/upload/files/jixivofobibetukaziwu.pdfIn PDF document text
    • http://emons-verlag.net/testarea/cwsCMSlight/media/files/14327557687.pdfIn PDF document text
    • http://divorcefinance.nl/uploads/file/96934468879.pdfIn PDF document text
    • http://franklcalabreseattorney.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/wajuf.pdfIn PDF document text
    • https://www.luxboss.com/ckfinder/userfiles/files/12078733050.pdfIn PDF document text
    • https://pavaniautismschools.com/wp-content/plugins/super-forms/uploads/php/files/mmigpioq9u0g3ghiogp9a2tnhq/bajuteruzopaji.pdfIn PDF document text
    • http://viprealestatebrokers.com/userfiles/files/11118095088.pdfIn PDF document text
    • https://baatco.com/ckfinder/userfiles/files/72923313948.pdfIn PDF document text
    • http://unseretochter.com/images/file/bejofubalelanurudofi.pdfIn PDF document text
    • https://laatuwhuisweerstralen.nl/upload/file/geworejalo.pdfIn PDF document text
    • http://kcpsystem.com/userData/board/file/51361470218.pdfIn PDF document text
    • http://exactblue.com/wp-content/plugins/formcraft/file-upload/server/content/files/16146762f88f6e---zofukilobefogaje.pdfIn PDF document text
    • http://arablift.net/userfiles/file/gogarejenebolakaforoge.pdfIn PDF document text
    • http://urgentcarepb.net/userfiles/file/nufawoditaxijetipodivijol.pdfIn PDF document text
    • http://prime-standard.com/piceditor/file/vadokunimam.pdfIn PDF document text
    • https://pabausa.org/wp-content/plugins/formcraft/file-upload/server/content/files/16143cd3e9769d---51984272092.pdfIn PDF document text
    • http://thriftstorewebsites.com/flash/thriftstorewebsites.com/file/mugibogerubateva.pdfIn PDF document text
    • http://quickfix-poland.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133f88ef188c---foded.pdfIn PDF document text
    • http://s292376414.onlinehome.fr/datas/imgmail/file/nalotipamejasidaxo.pdfIn PDF document text
    • http://alessandrotria.altervista.org/areap/ckfinder/userfiles/files/56337965762.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_off0000d4ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4ED 19060 bytes
SHA-256: e7af9f1dd75abc04290fe74e220ec733947d005ad97c7abe8c778b325b32486c
font_01_sfnt_off00010666.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10666 10236 bytes
SHA-256: 9f2fa5df0070c15be5dbd8b34cecbbff972527032f652e729bcbd8927cf575f8
font_02_sfnt_off00011d96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D96 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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