Malicious PDF — malware analysis report

Static analysis result for SHA-256 30468b0047a8adc3…

MALICIOUS

PDF

81.0 KB Created: 2021-06-15 13:43:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 1c55c5271cecbe1b1f4023a3e4b516cd SHA-1: 48d0df93faf3562b1e814b02c5c606882eb68f6a SHA-256: 30468b0047a8adc3d9eedf6aa08485db62adc950edb435ead20eabda6139ae1b
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous links pointing to compromised websites and known malicious redirectors, disguised as download pages for media. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to lure users into downloading further malware or engaging in phishing activities. No scripts were extracted, but the embedded URLs are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://wastran.ru/uplcv?utm_term=j+cole+wet+dreams+mp3+download+mp3lio In PDF document text
    • https://allcreaturesinc.com/files/files/juzugivolavaxevuwozegidov.pdfIn PDF document text
    • https://hcs1000.org/wp-content/plugins/super-forms/uploads/php/files/545fdc05c4b09a3f32b95d24a282baba/42322839144.pdfIn PDF document text
    • http://www.linkkorea.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/16083a93e8f945---5075346912.pdfIn PDF document text
    • http://victorylimo1.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d4b8b5675e---koxubogunomi.pdfIn PDF document text
    • https://palcev.ru/userfiles/file/megejilajepefefur.pdfIn PDF document text
    • http://veronicanealhome.com/wp-content/plugins/formcraft/file-upload/server/content/files/2/1608cb7336ac28---73372996106.pdfIn PDF document text
    • https://www.freshstartdigitalmarketing.com/wp-content/plugins/super-forms/uploads/php/files/3833bcfbef6a098a6224842020c31fdb/vatawilopamajefof.pdfIn PDF document text
    • https://k2salight.com/wp-content/plugins/super-forms/uploads/php/files/59dc901a7b70845b9b9e83029842d75d/8638032880.pdfIn PDF document text
    • http://structurecreative.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2caec1d934---99361619024.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609677fc37d07---27231875222.pdfIn PDF document text
    • https://jdbailbonds.com/wp-content/plugins/super-forms/uploads/php/files/48a9f2c1556e3fca59d824d4a36a2488/sunoveta.pdfIn PDF document text
    • http://www.acefence.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c4373218670---xozopuvojozotefurubovuje.pdfIn PDF document text
    • http://renovator.cz/files/file/xabiximigawudegojavulufol.pdfIn PDF document text
    • https://ifacemount.com/wp-content/plugins/super-forms/uploads/php/files/cmscud100holnc3s56ige4iui9/44225881423.pdfIn PDF document text
    • https://www.bouldersudbury.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b40b0ef07a4---gututuwesakenitixugatifur.pdfIn PDF document text
    • http://praconsulgroup.ru/pict/file/79035393580.pdfIn PDF document text
    • http://www.ponderosafestival.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078e49d51da1---72906121416.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e416.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE416 5252 bytes
SHA-256: 8c836a17ad2d7493d7d7d0ca16ff027264b7ed022c414859c088df9c36381c40
font_01_sfnt_off0000f5d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5D5 2292 bytes
SHA-256: dd3b5bd38a83c7e2e0f7a171d0b5d3425a8201f9b6b22b117a1d7190e2174ddd
font_02_sfnt_off00010044.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10044 11764 bytes
SHA-256: 93750b890934063467104e425731c8cefd0b257d12503bd2a56b47c5e393ed8a
font_03_sfnt_off00012842.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12842 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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