Malicious PDF — malware analysis report

Static analysis result for SHA-256 05d218d6c959ee3e…

MALICIOUS

PDF

74.9 KB Created: 2021-01-31 10:15:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 0adbdcb59959f7943745d9ab6c20145f SHA-1: 2a6c2c8d437a391c6dd2e2edbdb00693b9c6ba36 SHA-256: 05d218d6c959ee3e1133bc807815ee43764c69977cf392db895738b42b892c7f
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a large number of external links, identified as a link farm, which is a common tactic for SEO manipulation or directing users to malicious sites. ClamAV detection and ML classification strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users, potentially leading to phishing or malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://druttle.ru/123?utm_term=fnaf+3+office+sound PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4493578/normal_5ff22ab592916.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426696/normal_5fcefbdf41715.pdfIn PDF document text
    • https://kunejadisitezan.weebly.com/uploads/1/3/4/0/134096254/9546182.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490738/normal_5feb6172dc509.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418166/normal_5fc6f1fada543.pdfIn PDF document text
    • https://wozuxepu.weebly.com/uploads/1/3/4/4/134478893/69a39a85e0320b8.pdfIn PDF document text
    • http://letxxnx.org/25591364380wohy8.pdfIn PDF document text
    • https://kivisazof.weebly.com/uploads/1/3/2/6/132696558/8137211.pdfIn PDF document text
    • http://kamaz-ftc.com/38033851110uf5t8.pdfIn PDF document text
    • http://reduslim-italia.website/xebedijekekobumakly7nw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385635/normal_600a1bf9d0ea6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475379/normal_5fd9419c0d552.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447271/normal_5ff19c2cb4c4d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447276/normal_5fd631bc13841.pdfIn PDF document text
    • https://kigadipokifexi.weebly.com/uploads/1/3/0/8/130813079/kepeteja.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420013/normal_6000691153fc6.pdfIn PDF document text
    • http://shoop-fl.ru/514177964887drme.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/dowavelaxam/10584545673.pdfIn PDF document text
    • https://s3.amazonaws.com/mesixadelomomo/5119153214.pdfIn PDF document text
    • https://s3.amazonaws.com/bomifabipi/mejidudasomujitiwa.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e8de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8DE 5008 bytes
SHA-256: 4bd222c8f1d0458042988a95c83a2fbe3c120bcfacf05556c6f0e56e7af85ecb
font_01_sfnt_off0000fa04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA04 10696 bytes
SHA-256: b1072d6315b36a7e2c77bac7d876f777ae8a719303544586aa03abea681acb8f

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