Malicious PDF — malware analysis report

Static analysis result for SHA-256 20f418d4b644647a…

MALICIOUS

PDF

47.1 KB Created: 2020-11-02 08:58:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 571764b8f8a3611689f990e0c8ec1f66 SHA-1: db29dcbb53b905326050d01c25f92be5d73f42ab SHA-256: 20f418d4b644647a7cd940a68b14db314bf9398663c253b216ae8041c2030480
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by 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 1.0000

Heuristics 4

  • 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://ttraff.cc/123?keyword=illusion+connect+global In PDF document text
    • https://cdn-cms.f-static.net/uploads/4385214/normal_5f8f20cadcfb6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380675/normal_5f9cd16dcb98f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366008/normal_5f889c9adb97d.pdfIn PDF document text
    • https://panidulupeju.weebly.com/uploads/1/3/0/9/130969186/069e458d6d2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383170/normal_5f8be5c7d9765.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369654/normal_5f8d1877c5e61.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382405/normal_5f96646251b49.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384304/normal_5f8e7e852326a.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/e5bcd2697.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423715/normal_5f989caf2a3e9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369494/normal_5f9e2bc54c0cb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/4152/8257/files/89585410693.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1283/8808/files/miwejaku.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7fc5c9c-2d76-41c5-aabe-db53492703f1/ruxitiwefi.pdfIn PDF document text
    • https://s3.amazonaws.com/jagux/palazusuwivesewex.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63CC 4948 bytes
SHA-256: 5337c981e6f66cc541381b644953249b71659c13e08597d0c4e4ba784a6d4d00
font_01_sfnt_off000074ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74BA 10888 bytes
SHA-256: 5c8f005147b2ad4e8bfe569b0064a39497e549bc2620f9147d22669a73ba9ff9
font_02_sfnt_off000099bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99BD 16164 bytes
SHA-256: d1e000a586ddc8a0623eca8ddecf19fa4cbb355f6218882851c5fb64a47e179c

Open this report in the interactive analyzer, or submit your own file for analysis.