Malicious PDF — malware analysis report

Static analysis result for SHA-256 229910f23eb606ae…

MALICIOUS

PDF

46.0 KB Created: 2020-11-01 06:08:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 3db948352b5984b7b6047338b3f0139f SHA-1: da3ee40a57a4b8187adf878efd6e4feb5d32f4c6 SHA-256: 229910f23eb606ae8d175d6832967f62db4b29a1039dc88d306e3cfe9f5d12b9
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://cctraff.ru/strik?keyword=linear+feet+to+square+feet+formula In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368767/normal_5f9016b6e1192.pdfIn PDF document text
    • https://xavoxoxuda.weebly.com/uploads/1/3/1/3/131379246/985ff06.pdfIn PDF document text
    • https://donibirumot.weebly.com/uploads/1/3/4/4/134463545/df076.pdfIn PDF document text
    • https://nimubawelekuf.weebly.com/uploads/1/3/4/2/134265751/3107307.pdfIn PDF document text
    • https://gurivarux.weebly.com/uploads/1/3/4/3/134309953/1d2a7d9.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
    • https://cdn.shopify.com/s/files/1/0494/1882/9991/files/hidden_falls_engineered_hardwood_installation_instructions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c399706c-e045-4c07-b588-5e9a689ffd5f/print_lined_paper_landscape.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/3574/4163/files/ijoy_diamond_tank.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/1908/6235/files/96096027455.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d556593e-9c5d-42a5-978b-690ebbc36aa8/demekamalixalepibut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/4723/8818/files/jaloloreramu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/5076/8828/files/san_elijo_campgrounds_open.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5936/3496/files/60245564230.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000067c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67C9 4864 bytes
SHA-256: c1e998a941ac4b96727d527891129bf2e53689e7ebc0d49d834b4e393f4a976a
font_01_sfnt_off00007835.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7835 10804 bytes
SHA-256: f5e3600ccc19bf6f407b2012819a0c61f9131d630b698ec9eec584bd68b20c30
font_02_sfnt_off00009cfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CFA 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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