Malicious PDF — malware analysis report

Static analysis result for SHA-256 ced617312f84207d…

MALICIOUS

PDF

75.3 KB Created: 2020-12-19 11:39:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 7eadcc812cdbbc04f7b61701a5012e2c SHA-1: 90969a3e9b4b4bc8bf8f9f62bb891336e3aac467 SHA-256: ced617312f84207d0e35e3d7bb046527e60b11688e02659e7d3a55f45e82fa9a
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links to external websites, including a known malicious redirector. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The embedded URLs suggest an attempt to drive traffic to link farms or potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://gettraff.ru/aws?utm_term=boyz+2+full+movie+hd++marathi In PDF document text
    • https://cdn-cms.f-static.net/uploads/4383572/normal_5f9862568bf5c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425738/normal_5fcd3a1cbbc80.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488330/normal_5fac4fd0bbd5f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458124/normal_5fbee65b26325.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377938/normal_5fc55ee8bda9a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403406/normal_5faf37e817441.pdfIn PDF document text
    • https://vobakedipevurot.weebly.com/uploads/1/3/4/6/134661611/7408189.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370087/normal_5f9e320d25724.pdfIn PDF document text
    • https://xuzizalebu.weebly.com/uploads/1/3/4/7/134772475/kaxixiro-lipuxavijodo-vimorexij.pdfIn PDF document text
    • https://tigibivimibi.weebly.com/uploads/1/3/4/3/134344299/vezakujo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454556/normal_5fc98c5cb023f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://static1.squarespace.com/static/5fc79f8081da8a590db1a476/t/5fd715a87fc52c20693cde2d/1607931306609/nefumidivoxodotozagi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc13e7011f6a4198487f639/t/5fcea76a6df3f351a668a0c5/1607378795105/amazon_daily_deals_kindle_books.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://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b044.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB044 2888 bytes
SHA-256: 1c3c0c8191a3b7cd1b69ecf1d690a564d6733b6ef21108f44b8192a6edd82837
font_01_sfnt_off0000ba87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA87 5360 bytes
SHA-256: c30a2e622fa059a41650d02eaa917808b1c5532f7c70fcbca10013fac2b96b1a
font_02_sfnt_off0000ccb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCB4 10332 bytes
SHA-256: 919da3c8f366886c0797afbb536646a5b9f297263ef722b9760a5a3a13be856a
font_03_sfnt_off0000eff6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFF6 16368 bytes
SHA-256: 552e926f59ef53231249b6015cc51882b512f7a40c6b17c25f707dc25a221893
font_04_sfnt_off000105fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105FD 7568 bytes
SHA-256: 35267d2b76eceafa109e2749e307eb468b16281853493794880aba0f346c4604

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