Malicious PDF — malware analysis report

Static analysis result for SHA-256 064495c71a7c60e1…

MALICIOUS

PDF

41.3 KB Created: 2020-08-02 05:14:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ad6d513a24d2f92a50baeafcf7bb456c SHA-1: 75ca09a60ab407b97796f2bdcd9032393947a4d8 SHA-256: 064495c71a7c60e1874e32a1240fdb6a24c85b466614e50eee941c892df676a3
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, ttraff.ru, disguised as a pamphlet on how to pray the rosary. This indicates a phishing or scam attempt. The document also hosts a large number of external PDF links, suggesting a link farm for SEO manipulation or to obscure the malicious redirector. No scripts were extracted, but the presence of the malicious URL is a high-confidence indicator of malicious intent.

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/wb?keyword=how%20to%20pray%20the%20rosary%20pamphlet%20pdf
    • http://files.eventsforafrica.com/uploads/1/3/1/4/131453132/sufusumidipod.pdf
    • http://files.carolinagreenindustrynetwork.com/uploads/1/3/0/7/130775707/3985898.pdf
    • http://files.kickstart-hr.com/uploads/1/3/1/3/131383771/c9fe20.pdf
    • http://files.pigolin.com/uploads/1/3/0/9/130969762/8776387.pdf
    • http://files.grizzlecoastalconsulting.com/uploads/1/3/0/8/130874097/1755296.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/62042090741.pdf
    • https://cdn.shopify.com/s/files/1/0439/8707/5230/files/25550235779.pdf
    • https://cdn.shopify.com/s/files/1/0429/1559/4393/files/vawixo.pdf
    • https://cdn.shopify.com/s/files/1/0434/0436/1884/files/natekekofogalasetu.pdf
    • https://cdn.shopify.com/s/files/1/0437/1460/9303/files/52950952176.pdf
    • https://cdn.shopify.com/s/files/1/0431/0673/0144/files/16768415064.pdf
    • https://cdn.shopify.com/s/files/1/0430/7881/1797/files/five_nights_at_love_dating_sim.pdf
    • https://cdn.shopify.com/s/files/1/0435/6990/5825/files/21716292318.pdf
    • https://cdn.shopify.com/s/files/1/0438/1884/4322/files/lanodiwegozod.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kefemomorevogik.pdf
    • https://cdn.shopify.com/s/files/1/0428/2214/0063/files/wemadugefotavakajo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/varanomavumozomadeda.pdf
    • https://cdn.shopify.com/s/files/1/0432/4930/3720/files/52578204486.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_off00006373.bin
afd36afb892771c767039b8da3d9985a7293f588bc2e4905c7b1987d2d3491c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6373 5436 bytes
font_01_sfnt_off000075db.bin
13c76995f2e6ab927ea03c6067df053094ac36434ae560a7363c55057c668d27		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75DB 10076 bytes

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