Malicious PDF — malware analysis report

Static analysis result for SHA-256 808dd7293b8efc17…

MALICIOUS

PDF

67.6 KB Created: 2021-01-05 06:30:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: e4421ea1f3d52a9bea31639980b94267 SHA-1: 5dfbdfa460848e752f61dd08ac929ed9daefc8bf SHA-256: 808dd7293b8efc173d28ea30c840dc521fde02b90f58a619ce70be91159d324b
212 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7178

Heuristics 4

  • 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.
  • 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://traffmen.ru/aws?utm_term=jennifer+lopez+aint+your+mama+video In PDF document text
    • https://tunimesepet.weebly.com/uploads/1/3/1/4/131455680/7497551.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369501/normal_5fc1e69080faf.pdfIn PDF document text
    • https://cdn.sqhk.co/tinipuded/hafjcqX/93450078788.pdfIn PDF document text
    • https://cdn.sqhk.co/jisanipu/cjbjcgh/77585543401.pdfIn PDF document text
    • https://zoradelageruwol.weebly.com/uploads/1/3/4/5/134591251/29473.pdfIn PDF document text
    • https://cdn.sqhk.co/girewobo/9Ipjcy1/black_friday_deals_best_buy_appliances.pdfIn PDF document text
    • https://cdn.sqhk.co/vujenibolo/igm7kib/ios_app_store_search_not_working.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/polojuliragam/18393166157.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagobomap/9734324085.pdfIn PDF document text
    • https://s3.amazonaws.com/rovikibixu/zafotanolikude.pdfIn PDF document text
    • https://s3.amazonaws.com/muxozuvalubi/88443865500.pdfIn PDF document text
    • https://s3.amazonaws.com/kesumasaka/words_that_start_with_sub_meaning_under.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d418.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD418 5212 bytes
SHA-256: 98b71706bd5b9fb94e706c5dba6da58390abd8d1711d98dadd65322343e6d7ea
font_01_sfnt_off0000e5da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5DA 11160 bytes
SHA-256: 616e2c528e533643bf907e60a767ca0fd4d447f67fee2451469def925e53abca

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