Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c7fbeea1b72ff91…

MALICIOUS

PDF

42.3 KB Created: 2020-07-31 01:29:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1710977759f602574779733237a62df0 SHA-1: 6917314f414e69361e81220e976d000d6ea8ca3d SHA-256: 9c7fbeea1b72ff911735ea4118a260acb9eb886575455edc99523b4a3cc85ba7
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains embedded links, with one heuristic specifically identifying a malicious redirector. The document body, though heavily obfuscated, contains text related to 'Anexo 20 cfdi 3. 3 pdf' and 'invoice/payment', aligning with the 'SE_INVOICE_LURE' heuristic. The primary malicious URL identified is ttraff.ru, which is used to redirect the user to further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=anexo+20+cfdi+3.+3+pdf In PDF document text
    • http://files.ribbonsbyfir.com/uploads/1/3/1/8/131857734/fepefepibosunerodu.pdfIn PDF document text
    • http://files.thetunacakes.com/uploads/1/3/1/4/131437632/d4eb01d897.pdfIn PDF document text
    • http://files.theasvabtutor.co/uploads/1/3/1/4/131408364/bf495c11f65.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5742/2229/files/79310425569.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2430/8630/files/39752455999.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7587/0613/files/nexajimarusulumume.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kemulubu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8402/8833/files/10897150973.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4433/9861/files/mebifevotevekelijubunoke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1570/7551/files/15623628563.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2816/9375/files/vilimejesanusurusoxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4907/4336/files/zujenibiju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7342/0965/files/76757944834.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7777/9100/files/63098992272.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1645/4305/files/58755227420.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0978/5512/files/11202907351.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 4

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_off00006951.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6951 4868 bytes
SHA-256: 775321f68043aceea1918cca607713cb3c703d1b740e2e63a38bfd267c2df6e1
font_01_sfnt_off000079f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79F9 10048 bytes
SHA-256: d39edefc61776f454fcc38ceb57c28aecc08069616e523bf23a37b33df5293d9

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