Malicious PDF — malware analysis report

Static analysis result for SHA-256 03df7e24ddafe278…

MALICIOUS

PDF

55.3 KB Created: 2020-08-08 00:49:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 72d8296d8c888d1d22b7067456526bdd SHA-1: 98312ba5fbda7a6b6077ea749d43483748c3f39a SHA-256: 03df7e24ddafe2780cf6819a4a2450f9fe956d0f081cf2f5e72e7234a3d04586
162 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external resources, suggesting a link farm designed for SEO manipulation or to host malicious content. One critical heuristic identified a link to known malicious redirector infrastructure. The presence of a 'download button' lure further supports the malicious intent of directing users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.ru/pify?keyword=bailey+and+love+surgery+24th+edition+pdf+free+download
    • http://files.biocyclic-network.net/uploads/1/3/2/8/132814977/4c2c493e8a37.pdf
    • http://files.youthadvocatesforanimalrights.org/uploads/1/3/1/4/131483069/divakazalapemu-mikotigimukem.pdf
    • http://files.asubmersible.net/uploads/1/3/0/8/130874046/4d0a7d6b8a295bd.pdf
    • http://files.deityandhumanity.com/uploads/1/3/1/6/131637073/gibape.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/7272/4892/files/asl_alphabet_chart.pdf
    • https://cdn.shopify.com/s/files/1/0431/3733/5464/files/xetupokumelepirorutot.pdf
    • https://cdn.shopify.com/s/files/1/0430/6976/7842/files/dukexusebeb.pdf
    • https://cdn.shopify.com/s/files/1/0436/9920/8346/files/paulo_coelho_el_alquimista.pdf
    • https://cdn.shopify.com/s/files/1/0433/8361/9736/files/estus_shard_locations_ds2.pdf
    • https://cdn.shopify.com/s/files/1/0430/0128/2711/files/xetep.pdf
    • https://cdn.shopify.com/s/files/1/0430/6563/9069/files/zivurat.pdf
    • https://cdn.shopify.com/s/files/1/0433/9410/5509/files/33366507938.pdf
    • https://cdn.shopify.com/s/files/1/0434/1963/1765/files/20531306971.pdf
    • https://cdn.shopify.com/s/files/1/0438/9237/5704/files/19708266541.pdf
    • https://cdn.shopify.com/s/files/1/0432/8275/9836/files/zojegexipujele.pdf
    • https://cdn.shopify.com/s/files/1/0431/1855/9389/files/shoni_the_shilent_vanilla.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000098e5.bin
1cdbe5c1369a6ba6f9f40e50747ca886250e138bdd29be640d93a0e20c37b5d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x98E5 5828 bytes
font_01_sfnt_off0000acdc.bin
b604890e206234a63b46601b9244b82ca97551ab306ad8f76ce508bec3246761		 pdf-font-stream PDF embedded font (sfnt) at offset 0xACDC 10136 bytes

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