Malicious PDF — malware analysis report

Static analysis result for SHA-256 70931f0874af0104…

MALICIOUS

PDF

49.3 KB Created: 2020-10-28 22:54:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: cfb153e99ac5dbcc6b3e4258710e077f SHA-1: da668436956a93544c4a45093d50b9cf99a70629 SHA-256: 70931f0874af010470a9525887bd2746c4ba12a1a226c415aed3b6daeb04427a
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://ggtraff.ru/aws?keyword=the+art+of+travel+photography+pdf In PDF document text
    • https://vuxofuta.weebly.com/uploads/1/3/4/2/134235669/6410595.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376609/normal_5f8ca0367aa97.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387699/normal_5f98cec672b32.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379236/normal_5f974e18ed30f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368497/normal_5f8f1b4cd5521.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366633/normal_5f87ae581ae0c.pdfIn PDF document text
    • https://rikisuluwujufa.weebly.com/uploads/1/3/1/4/131452938/metugewajubadesutetu.pdfIn PDF document text
    • https://dokakida.weebly.com/uploads/1/3/1/3/131380589/nedakiloput_bilofevuwuv_siweferog_vifinufawovuteg.pdfIn PDF document text
    • https://mewuvirinikupu.weebly.com/uploads/1/3/4/5/134505229/fozoniz_vupizar_nisasipojado_vibuwovekisolo.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/donake/guroliriluzafunufapir.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/statistical_quality_control_7th_edition_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/9578/9220/files/34463441220.pdfIn PDF document text
    • https://s3.amazonaws.com/voxulija/salarakalogasavekovitij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8730/7975/files/vujijepevixegopakal.pdfIn PDF document text
    • https://s3.amazonaws.com/wajibile/putam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5077/8269/files/59814369603.pdfIn PDF document text
    • https://s3.amazonaws.com/vonuxagupeduze/3895000359.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/8385/2704/files/juvadofuzepotunum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/1673/0799/files/borabutimotumibasimo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/5978/1023/files/steel_concrete_composite_structures.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/9308/1287/files/myxomycetes_biology_systematics_biogeography_and_ecology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2536/6165/files/27986659297.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_off00008245.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8245 5236 bytes
SHA-256: ed51b0fee4919c3161657fe20adb71c927b5553320291b77035a2fc84592120e
font_01_sfnt_off00009422.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9422 10500 bytes
SHA-256: c210b3f18de10bbe0d23a167440f51deba7f8181c7fe0670c861c77458d594c1

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