Malicious PDF — malware analysis report

Static analysis result for SHA-256 d69c6f69eeb95dea…

MALICIOUS

PDF

100.0 KB Created: 2021-07-28 07:01:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-17
MD5: fd18ab6f2485ed46723fdf63d0470aee SHA-1: a9e39f415de2310001ab059a5dc818a50e5c89e0 SHA-256: d69c6f69eeb95dea2d5e77966a50cef99f3e968996287adef1de85832e39c645
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to compromised WordPress sites and disposable hosting, suggesting a link farm designed to obscure the ultimate destination. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware delivery. No scripts were extracted, but the structure and URL patterns are consistent with a spearphishing attachment.

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://hafa-verein.de/wp-content/plugins/super-forms/uploads/php/files/66da07188b5294b95fa46368866e56bd/danezuvuvudipidugodowaz.pdf In PDF document text
    • http://provia-events.de/pics/fotos/1/file/96595675221.pdfIn PDF document text
    • http://secureyun.cn/uploadfile/file///2021072415052473.pdfIn PDF document text
    • http://ajivikafinance.com/userfiles/file/1043151629.pdfIn PDF document text
    • http://ophirtonhotel.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160e13e5b327e8---fizojojolujaxiwirotikavoz.pdfIn PDF document text
    • http://hesexpo.com/img/editor/image/file/dosopawadol.pdfIn PDF document text
    • http://igabana.com/upfolder/e/files/20210625054551.pdfIn PDF document text
    • http://phunggia.biz/userfiles/file/5967299540.pdfIn PDF document text
    • https://formapolis.it/wp-content/plugins/super-forms/uploads/php/files/0614a9eb2e7d86bfbbe8253775868a8f/52775951654.pdfIn PDF document text
    • https://www.bocamvigliesrooms.com/wp-content/plugins/super-forms/uploads/php/files/6efbb46d5caa4ca955f82222e805d580/ruxadub.pdfIn PDF document text
    • https://traveltokiev.com/wp-content/plugins/super-forms/uploads/php/files/94fp2u0n8s9998u9gus6s6jts0/xepotijukiw.pdfIn PDF document text
    • https://thejinglelab.com/wp-content/plugins/super-forms/uploads/php/files/upv4rr3vb78hlvj7en6ub26m38/murufekipigagemi.pdfIn PDF document text
    • http://heibldr.hu/FCKfeltoltott/file/9927943056.pdfIn PDF document text
    • http://cuacuonnhaxuongbinhduong.com/upload/files/jowodirobazuridesosizuso.pdfIn PDF document text
    • https://study-go.info/wp-content/plugins/super-forms/uploads/php/files/38e231a1037484ddda2336b45e995007/64323759473.pdfIn PDF document text
    • http://lilit-realty.com/wp-content/plugins/super-forms/uploads/php/files/gt37q9ifpu3e8t9o9908s7ocj2/78296070300.pdfIn PDF document text
    • http://dancedynamicsla.com/clients/38740/File/95247906270.pdfIn PDF document text
    • https://www.picmephotoboothhire.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160812cba226e9---38957258671.pdfIn PDF document text
    • https://www.cr-sdc.org/wp-content/plugins/super-forms/uploads/php/files/de3deed004dd9fecb1da22c84cc248e9/velezukosejale.pdfIn PDF document text
    • https://laatjehuisweerstralen.nl/upload/file/79097120678.pdfIn PDF document text
    • http://atenngo.com/admin/sites/site/documents/7435936885.pdfIn PDF document text
    • http://www.hj-bouwt.be/wp-content/plugins/formcraft/file-upload/server/content/files/1607b2b11b3122---47126984327.pdfIn PDF document text
    • http://fashioncenterpoint.com/wp-content/plugins/super-forms/uploads/php/files/6f11fbd98bda779d761a814e87f6d54a/bonodosiluxokuxowasili.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=watch+free+movies+unblocked+at+schoolPDF 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_off0001212e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1212E 11132 bytes
SHA-256: c1151f3617d636f528ba24a3ef792796ee18951a8a9829ed2b5b1414b1e8bcdd
font_01_sfnt_off00013b0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B0A 16996 bytes
SHA-256: b12c1560e80752186954059f99c38fe039d121992e95b12fce6b9e5b38d429d1
font_02_sfnt_off00016732.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16732 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1