Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c03902024ee86aa…

MALICIOUS

PDF

46.6 KB Created: 2020-08-13 02:50:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 02f0529fdf3a3460123773285e88d6ed SHA-1: 8aca4fb10451c1355b04702b281b4f46e3199298 SHA-256: 0c03902024ee86aaf0fb9000b981f1843520882b85d2fc211c2229194c907491
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many of which point to a link farm designed to host malicious content. One prominent URL, 'https://ttraff.ru/pify?keyword=artificial+intelligence+book+by+rich+and+knight+pdf', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL and other benign-looking Shopify links, suggesting a deceptive lure to drive traffic to malicious sites.

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.ru/pify?keyword=artificial+intelligence+book+by+rich+and+knight+pdf
    • http://guwirojid.srbelec.co.uk/uploads/1/3/0/7/130776760/769747.pdf
    • http://duwujuja.bgiapartments.com/uploads/1/3/1/6/131606289/pesizu.pdf
    • http://files.mayusaeki.com/uploads/1/3/1/4/131453177/0d76b43dd8b7.pdf
    • http://files.rocksolidskilltraining.com/uploads/1/3/1/8/131856034/ac2e10ff.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/8058/1274/files/9704743142.pdf
    • https://cdn.shopify.com/s/files/1/0430/8611/9079/files/52140575984.pdf
    • https://cdn.shopify.com/s/files/1/0430/6078/9409/files/traditional_catholic_advent_wreath_prayers.pdf
    • https://cdn.shopify.com/s/files/1/0436/6116/4697/files/biochemistry_4th_edition_donald_voet.pdf
    • https://cdn.shopify.com/s/files/1/0431/0102/8503/files/mugulezekupewugase.pdf
    • https://cdn.shopify.com/s/files/1/0430/6645/8266/files/85176118530.pdf
    • https://cdn.shopify.com/s/files/1/0433/0130/6526/files/kojovitilizugoxi.pdf
    • https://cdn.shopify.com/s/files/1/0427/9320/5916/files/nokudebad.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13879903487.pdf
    • https://cdn.shopify.com/s/files/1/0433/7093/8533/files/33710030720.pdf
    • https://cdn.shopify.com/s/files/1/0430/5331/8306/files/balopewunapi.pdf
    • https://cdn.shopify.com/s/files/1/0431/1567/5809/files/57923593773.pdf
    • https://cdn.shopify.com/s/files/1/0428/0143/0695/files/kajafopusuzeboluzelidize.pdf
    • https://cdn.shopify.com/s/files/1/0436/0945/6803/files/dental_office_manager_job_description.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_off0000762a.bin
28c896b91a40f8ff47bd1262370399e8cbef929a5dda782f33005641a70e3375		 pdf-font-stream PDF embedded font (sfnt) at offset 0x762A 5536 bytes
font_01_sfnt_off000088ec.bin
09033865c3c65c91f88037fcd5704bf21948563bab4783c5e4c60c531fe27812		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88EC 10624 bytes

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