Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2995ccdd96522e8…

MALICIOUS

PDF

84.0 KB Created: 2021-08-13 03:05:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: e94d2a772f73cef5d981918b637dd8de SHA-1: c614c7a845261301c26b55b4a049360d12aecead SHA-256: d2995ccdd96522e83ec5f053403ba4e83037fca5da6ab58d59ce199f96709a03
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external URLs, many of which are hosted on compromised WordPress sites or disposable domains, suggesting a link farm or phishing lure. The PDF structure and embedded content are consistent with attempts to redirect users to malicious sites, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://nomylo.ru/uplcv?utm_term=what+happens+in+act+2+julius+caesar PDF link annotation
    • https://cemb.ca/upload/editor/file/jokugebanu.pdfIn PDF document text
    • http://bukharasuwanee.com/sites/default/files/file/25984008364.pdfIn PDF document text
    • http://altinay-law.com/images/file/pixuji.pdfIn PDF document text
    • http://allycatering.com/userfiles/68195453576.pdfIn PDF document text
    • https://atraba-holding.com/userfiles/file/74800412442.pdfIn PDF document text
    • http://decaldankinh.net/upload/files/86859582832.pdfIn PDF document text
    • http://andrelandberg.com/userfiles/file/79244735327.pdfIn PDF document text
    • https://mirrorlink.com/public/files/files/xapovufetilutowotodo.pdfIn PDF document text
    • http://mesotects.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f2f2736348a---51000795089.pdfIn PDF document text
    • http://thaide.org/userfiles/file/8059292526.pdfIn PDF document text
    • http://hicoweld.com/shop/fck_file/file/55052262352.pdfIn PDF document text
    • https://www.stamfordtaxis.com/wp-content/plugins/super-forms/uploads/php/files/09rh20p3vis4emudl6c1sif9v1/89969703305.pdfIn PDF document text
    • https://coluer.ir/documents/file/67222368773.pdfIn PDF document text
    • http://www.birapart.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090ea520c4ec---mogiwudozawata.pdfIn PDF document text
    • https://egyiksem.hu/uploads/file/jejovudefugezipi.pdfIn PDF document text
    • http://gloria-eurex.com/images/blog//file/38884475051.pdfIn PDF document text
    • http://eot.mn/uploads/userfiles/files/91508023745.pdfIn PDF document text
    • https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/f0b6b5406c52d3f1f65865f607cb1bba/lorapeza.pdfIn PDF document text
    • https://bawaniint.com/ckfinder/userfiles/files/siwesotizokoditoke.pdfIn PDF document text
    • https://www.ergunaygoren.com/wp-content/plugins/formcraft/file-upload/server/content/files/160709d164e1de---lupusezabelusirigezep.pdfIn PDF document text
    • https://pensiuneavalentina.ro/app/webroot/file/zubulatopatobizo.pdfIn PDF document text
    • http://jenistudio.com/upload/FCK/file/tulebumolef.pdfIn PDF document text
    • http://copingconversations.com/userfiles/file/26967413913.pdfIn PDF document text
    • https://howardsteeves.com/wp-content/plugins/super-forms/uploads/php/files/c92efbf7d3e3e97d0c3b969c787d5ed8/devulasob.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_off0000e8d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8D2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000100e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100E9 10692 bytes
SHA-256: 2a601f1566584706629250064ed3ae201a77848624a71bc8568154e774d77bcd
font_02_sfnt_off00011966.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11966 16072 bytes
SHA-256: 0c4a7488a87724b606b3ed3d99f028437a78dbb3730eedbb9d73f1d59a8991ab

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