Malicious PDF — malware analysis report

Static analysis result for SHA-256 074ac1b28f5e77ee…

MALICIOUS

PDF

70.7 KB Created: 2021-08-04 06:29:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 86b2db14b96e5f526d769600a70188ea SHA-1: 2b93d8b455d6477a89d9bd241c1087d141406d99 SHA-256: 074ac1b28f5e77ee63630db6f9957c1c6e3984fb5c8b1d5ebc57a9dd47b423f6
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. It functions as a link farm, containing numerous URLs that point to various websites, some of which are hosted on compromised CMS platforms. The presence of multiple links and the use of UTM parameters suggest an attempt to manipulate search engine rankings or direct users to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://eyestech.in/wp-content/plugins/super-forms/uploads/php/files/lnqd8gok3rfl0colsts1klqnk3/71450770490.pdf In PDF document text
    • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/7f4cc90e3aa48643619af5ceb6ad74b9/9272067590.pdfIn PDF document text
    • http://appfacile.it/file/60402816144.pdfIn PDF document text
    • http://www.tsahimmongol.com/uploads/images/files/doxofuzuxosagowimapeluge.pdfIn PDF document text
    • http://zkojicin.cz/userfiles/file/fugulusonuzironefurin.pdfIn PDF document text
    • http://netflor.pl/upload/File/28061134359.pdfIn PDF document text
    • https://frennphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608738dd96843---59587505002.pdfIn PDF document text
    • https://baxsporthorses.nl/userfiles/file/39951911825.pdfIn PDF document text
    • http://bnblspecialities.com/userfiles/files/pibazawilupazowopimotit.pdfIn PDF document text
    • http://comlark.ru/userfiles/files/fedotasekumapuge.pdfIn PDF document text
    • http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/0be10066f1d8655fad668c337670727b/11951661781.pdfIn PDF document text
    • http://www.predoisiasociatii.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160b6d48f4ca9a---83530419375.pdfIn PDF document text
    • http://www.colegiometa.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/160887a1b5e498---fepujedonosukofit.pdfIn PDF document text
    • http://www.hkqi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b7c33198f9---69199041542.pdfIn PDF document text
    • http://wmehoa.org/clients/d/df/dff1b85474dadb967ea0c40f6d5e37f8/File/12021333215.pdfIn PDF document text
    • https://gulertrafik.com/wp-content/plugins/super-forms/uploads/php/files/6qffc2n3h381r2jj9caki5kh4l/golezuvigopawoxata.pdfIn PDF document text
    • https://guineaservicesproviders.com/gsp/files/xadididunowimuzimuruke.pdfIn PDF document text
    • http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/2b05a0b34cdb70c34b7e09f0de6046b8/fexobazosuxekomugut.pdfIn PDF document text
    • http://crosswaysrecruitment.com/userfiles/file/gobuvadokajokuba.pdfIn PDF document text
    • http://ersatzmonitor.de/userfiles/file/85909787980.pdfIn PDF document text
    • http://knuhpharm.kr/userfiles/file/20210621130516.pdfIn PDF document text
    • http://lavera.it/wp-content/plugins/formcraft/file-upload/server/content/files/160fa4627a775c---39239923430.pdfIn PDF document text
    • http://kursadowicz.pl/Upload/file/4873909237.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=how+can+i+get+google+redeem+code+for+freePDF 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b4ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB4ED 15424 bytes
SHA-256: 7eca70d09aeae7bfa6bc63649b4fa9511d180ef8f69610c7300b8e24ad415c20
font_01_sfnt_off0000dc7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC7F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000f496.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF496 10728 bytes
SHA-256: e2067c492dea5766d0b128637886f238bc55b91b23b83d615005dbb8daf6f40e

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