Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc6456c7198e9e96…

MALICIOUS

PDF

86.2 KB Created: 2021-07-15 10:54:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: a656b376d69b8c77f334b3eb33eff425 SHA-1: 3d2445b8703242dc92af20c65d52fa9c3d51c0d7 SHA-256: cc6456c7198e9e96c1cb4ebebc60d2a98c419260465cece3eb06a1ca327ae64f
156 Risk Score

Malware Insights

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

This PDF was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The file functions as a link farm, with numerous embedded URLs pointing to external sites, many of which are hosted on compromised CMS platforms. This suggests the PDF is used to redirect users to potentially malicious content, such as phishing pages or malware download sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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://ercrs.org/wp-content/plugins/super-forms/uploads/php/files/vajl9i540opn9v6dk68afrd70r/fejifufusefutexutejido.pdf In PDF document text
    • https://ltssinternational.com/res/wysiwyg/file/81579056924.pdfIn PDF document text
    • http://pivotal-technologies.com/userfiles/file/nogibenur.pdfIn PDF document text
    • https://swotin.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d1ecc790ca6---memibajepanilovunirobo.pdfIn PDF document text
    • http://hzdsbg.com/uploadfile/1624896664.pdfIn PDF document text
    • http://thomas-reunion.com/clients/8/86/86f5f051d314e00f57792b8428d7085d/File/kazopuredobologivaxadig.pdfIn PDF document text
    • http://naphotelbangkok.com/userfiles/files/71840398003.pdfIn PDF document text
    • https://playgametoday.ru/wp-content/plugins/super-forms/uploads/php/files/05228cc5cc821a2d4b390e5e303c8122/36618139410.pdfIn PDF document text
    • http://files.ibiza-ferien.de/file/59678034972.pdfIn PDF document text
    • http://stacjaregeneracja.pl/userfiles/file/16967722708.pdfIn PDF document text
    • https://www.hadlowsecurityshutters.com/wp-content/plugins/super-forms/uploads/php/files/8cef6b96718ce9970322e6e430b2ac01/tutelel.pdfIn PDF document text
    • http://melissajacksonmd.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c4008b3f20---sefavad.pdfIn PDF document text
    • https://hiddencliff.kr/FileData/ckfinder/files/20210622_40C4F8715AC885FA.pdfIn PDF document text
    • https://kayakbranson.com/wp-content/plugins/formcraft/file-upload/server/content/files/160acc3e3d5a02---28921399215.pdfIn PDF document text
    • http://brandweeramsterdamamstellanden.nl/userfiles/file/18835638177.pdfIn PDF document text
    • https://mimpishio2.net/contents//files/40536473622.pdfIn PDF document text
    • https://www.mii.net/wp-content/plugins/super-forms/uploads/php/files/74f424966ebef1a8143bb83103e90525/73651041705.pdfIn PDF document text
    • https://www.abaco-engineering.it/wp-content/plugins/formcraft/file-upload/server/content/files/160e488752a07a---90167222863.pdfIn PDF document text
    • http://parkwestresidences.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b8143a245b---mazamob.pdfIn PDF document text
    • http://aydinservis.com/ckfinder/userfiles/files/lixetezobabo.pdfIn PDF document text
    • http://sgpeo.pl/users//file/jemuk.pdfIn PDF document text
    • http://kjphotocon.org/data/userfiles/files/75948412531.pdfIn PDF document text
    • http://lhs60to70.com/clients/3/32/32806278e47d7e4d905c37b1d6ebf04a/File/50595980507.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=anger+begets+anger+bible+versePDF 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_off0000f06e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF06E 16868 bytes
SHA-256: 755fe418473c0e1d62b4540074b156dd2b8f4f9e202a535ab593ced62fb9258f
font_01_sfnt_off00011c23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C23 10352 bytes
SHA-256: 616cceeac799e8ef00abeb8d8b2d353434066c8f1552da87ed0ff14ea41d214a
font_02_sfnt_off000133af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x133AF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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