Malicious PDF — malware analysis report

Static analysis result for SHA-256 01a4bed2036a8b0a…

MALICIOUS

PDF

84.3 KB Created: 2021-09-05 22:45:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: 5ca7fb6fee9cbb5770b715a76928dff1 SHA-1: 37f61e19135cd04bcddb1952273ff9782841a417 SHA-256: 01a4bed2036a8b0af7098d013fd5b3cb2171af7f7d16c67bad4d02146a842c5b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF was flagged by multiple heuristics as a link farm, with many URLs pointing to compromised or disposable hosting. ClamAV and an ML classifier also identified it as malicious, specifically as Pdf.Phishing.Trojan. The presence of numerous links to external resources, some on suspicious domains, indicates an attempt to redirect the user to malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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://dannysacademy.com/ckfinder/userfiles/files/mapugafowazobuvulenip.pdf In PDF document text
    • http://linuxnewyork.com/draft/media/64648123878.pdfIn PDF document text
    • https://erdenetpost.mn/userfiles/files/13454402794.pdfIn PDF document text
    • http://canxetaidientu.com/images/file/bajemibalevowilin.pdfIn PDF document text
    • http://tzoetemondje.be/uploads/files/37856807326.pdfIn PDF document text
    • https://hmv.ir/wp-content/plugins/formcraft/file-upload/server/content/files/160bacdfe1d156---dinofik.pdfIn PDF document text
    • http://ahrestygz.com/userfiles/files/20210617_202512.pdfIn PDF document text
    • https://arichaindia.com/userfiles/file/jopamifasosoxoku.pdfIn PDF document text
    • https://www.mybizwebsites.com/wp-content/plugins/formcraft/file-upload/server/content/files/160948f54a8982---47080164597.pdfIn PDF document text
    • http://www.zywawiara.pl/pliki/32960037264.pdfIn PDF document text
    • http://moestuinwebshop.nl/userfiles/file/vofam.pdfIn PDF document text
    • https://vickers-electronics.co.uk/wp-content/plugins/super-forms/uploads/php/files/3ed95ae91bfe9d3d6ce655c46349f8ca/menidewufakarofumax.pdfIn PDF document text
    • https://luckysurface.itweald.com/uploads/files/613033389e1ec.pdfIn PDF document text
    • https://healthcareadvisorsgroup.com/wp-content/plugins/super-forms/uploads/php/files/hboeeccfa1v4mfrg1seb9c6dj7/54447795753.pdfIn PDF document text
    • http://eia-edu.com/userfiles/file/fuzoluken.pdfIn PDF document text
    • http://www.northeastmarquees.com/wp-content/plugins/super-forms/uploads/php/files/03fa766d4e7898e91e120eb37d9f65df/xegarebetodexiri.pdfIn PDF document text
    • http://morgancountyoh.com/userimages/peraloburomagubofufimusa.pdfIn PDF document text
    • http://naplesredeals.com/userfiles/files/94227564239.pdfIn PDF document text
    • https://boldvision.tv/wp-content/plugins/formcraft/file-upload/server/content/files/1607f1ba4b2d71---69636690222.pdfIn PDF document text
    • https://actorconseil.com/files/file/fagokego.pdfIn PDF document text
    • http://art-lan.ru/uploads/assets/file/26620886788.pdfIn PDF document text
    • https://avayemehr-carpet.ir/data/file/64768403063.pdfIn PDF document text
    • http://a-mega.ua/images/uploads/file/neforikape.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=hiperplasia+prostatica+benigna+pdf+2016PDF link annotation
    • 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e01f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE01F 11388 bytes
SHA-256: 16df6a7beae9dfeb4bb144dd2a97ccb7032a7b1f43e334d961d51e373c26dbbb
font_01_sfnt_off0000faaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAAA 18664 bytes
SHA-256: 84b80fae1f7d0b857e60bf56939568dcba7f95b87b7654f9d1259443b23d1c39
font_02_sfnt_off00012b48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B48 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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