Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc89e922d7c07865…

MALICIOUS

PDF

86.5 KB Created: 2021-06-26 09:44:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 01e369bc3ab47e8b5156ee1ea6656222 SHA-1: 658c1690cf74594a7522b751b60d3eed40887dc1 SHA-256: bc89e922d7c0786515f9598c233dd36d48160824dd781e75cdbadd905449c8d3
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The document functions as a link farm, containing numerous external URIs and pointing to compromised CMS upload storage, suggesting it is used to redirect users to potentially harmful websites. The presence of multiple disposable hosting links further supports its role in distributing malicious content or phishing lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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://inwebjor.ru/uplcv?utm_term=what+soil+does+a+snake+plant+need
    • http://sanphamhanquocymy.com/uploads/files/65978609390.pdf
    • https://www.acptechnologies.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d32223cdd4d---zosirijizebenur.pdf
    • http://smartmedicaleg.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d4f7ae3f731---sotesavozunadekefawego.pdf
    • https://dodatkireklamowe.pl/web/uploads/files/duvasaxetuvufovefefimufax.pdf
    • http://vtracauto.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b856e245b32---42567981893.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160764e55d9fd6---kujuk.pdf
    • http://wakingbeauty.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609bd1db0b51f---buzanikikewijuwuwanorozo.pdf
    • http://bahtiyardishekimi.com/fckfiles/file/zafiduwajuvujuwexi.pdf
    • http://mu-rrrc.com/userfiles/file/52465872467.pdf
    • http://for-rent-aalst.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c488812769---8605725857.pdf
    • http://sad-azov.ru/wp-content/plugins/super-forms/uploads/php/files/e82a51398ce9285ce69bdb6a44a79f0a/84592573441.pdf
    • https://performanceltg.com/wp-content/plugins/super-forms/uploads/php/files/94d403e8a28d5b253ed0151aa882fa9f/90426033290.pdf
    • https://www.elementstraining.co.uk/wp-content/plugins/super-forms/uploads/php/files/dsqkv8ops8duj4sesd90b5glsk/xikisana.pdf
    • https://mediabandit.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d06fa10fb1---jopoxer.pdf
    • https://www.histoiresdegroupes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160795371289c8---68469881477.pdf
    • https://ecobox.eng.br/wp-content/plugins/super-forms/uploads/php/files/14gq0qo5t2dl1fpjv7sf1mvsf6/korozomasesesodot.pdf
    • https://solarconsulting.org/wp-content/plugins/super-forms/uploads/php/files/c9d0fb179d0d0aa93b697573ab6be341/64358778866.pdf
    • https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/182c36b0c8bbcd00826fbd9f583fa1b6/jokakajojifunejoki.pdf
    • http://polkovnik.su/upload/file/mejagabubeke.pdf
    • https://greshamgilessalon.com/wp-content/plugins/super-forms/uploads/php/files/527559ab8d7873f192f47cf53c1e7523/2122866238.pdf
    • https://brokenspoke.com/wp-content/plugins/super-forms/uploads/php/files/0e029afeca18df1b05121948c9dc1f7d/laxadebusepejonovenugeme.pdf
    • https://www.sodigital.it/wp-content/plugins/formcraft/file-upload/server/content/files/16086387c37c51---dikoporixisixonefeke.pdf
    • http://csc-028.com/userfiles/file/20210622200825_jdc6jm.pdf
    • https://howardsteeves.com/wp-content/plugins/super-forms/uploads/php/files/b838d637b85ce3b5d679851c4d9e9415/92237011701.pdf
    • https://discovercefalu.com/_data/images/file/69948355153.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eed0.bin
30f87b755898d2cd06f1591ebecfc8e85b7a69eb6f0644c9ea4f967fee955fba		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEED0 10472 bytes
font_01_sfnt_off00010685.bin
34aa73cc28c42e438bd6341a8be05568dfdc51ce53a55f713963781730666fd6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10685 17596 bytes
font_02_sfnt_off00013486.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13486 16792 bytes

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