Malicious PDF — malware analysis report

Static analysis result for SHA-256 05d4b094cf462f68…

MALICIOUS

PDF

41.0 KB Created: 2020-08-18 18:00:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 541ce41115c617967dfbfa5f8e392d9b SHA-1: bcec8f633c65748bde6ce6be790e520c03944a36 SHA-256: 05d4b094cf462f6816c7422ed27877a13bb367dab473a563faccb07276cebb8c
162 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=drml+result+2018+marksheet'. The document body also contains this URL and numerous other links, many hosted on Shopify, suggesting a link farm or SEO poisoning attempt. The presence of a 'download button' heuristic further supports the lure-based attack pattern.

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=drml+result+2018+marksheet
    • http://files.wavehogsurfshop.com/uploads/1/3/1/4/131407227/5606148.pdf
    • http://pavexela.davidgloverproductions.com/uploads/1/3/0/9/130969465/161ea99e8f60a4.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/8469/3160/files/83489583315.pdf
    • https://cdn.shopify.com/s/files/1/0433/9204/1118/files/2008_dodge_ram_1500_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/0481/3721/files/97759374885.pdf
    • https://cdn.shopify.com/s/files/1/0436/9825/8088/files/sop_apgar_score.pdf
    • https://cdn.shopify.com/s/files/1/0430/8451/3440/files/lexobulosinupidivupejos.pdf
    • https://cdn.shopify.com/s/files/1/0437/0087/9510/files/single_scroll_website_template.pdf
    • https://cdn.shopify.com/s/files/1/0434/0944/0924/files/rosemaxiw.pdf
    • https://cdn.shopify.com/s/files/1/0437/3705/5393/files/wbsedcl_new_connection_application_form.pdf
    • https://cdn.shopify.com/s/files/1/0428/4016/2470/files/98977987989.pdf
    • https://cdn.shopify.com/s/files/1/0431/2363/8426/files/authorization_letter_samples.pdf
    • https://cdn.shopify.com/s/files/1/0431/0938/4345/files/1136235746.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_off0000621b.bin
b95f91665b2544c1c681f9c678deec2b941b1b54f30b871dcab21b234768f93b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x621B 5508 bytes
font_01_sfnt_off000074b8.bin
701a6f107eb24c381029543ddc1d687233f5bcabf81889062096032a64b762f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74B8 10048 bytes

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