Malicious PDF — malware analysis report

Static analysis result for SHA-256 c71e6a878248c0ee…

MALICIOUS

PDF

46.4 KB Created: 2020-08-21 17:53:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 241c4adcdb6e625a1742a0c853ef61c2 SHA-1: b4e613d31a02cdd2a6205abbb5a95af7b1c5e033 SHA-256: c71e6a878248c0eedfe928512549a7ed821c1233ee6611fc20401b871b571ba3
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a mass of external links, many pointing to a redirector service. The primary malicious link is https://ttraff.cc/pify?keyword=google+sheets+countif+multiple+criteria, which likely leads to a malicious site. The document body, though heavily obfuscated, contains references to this URL and other PDF files hosted on various domains, suggesting a link farm designed to distribute malware or phishing content. The ML classifier strongly supports the malicious nature of this PDF.

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.
  • 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.
  • 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.cc/pify?keyword=google+sheets+countif+multiple+criteria In PDF document text
    • http://noxoledi.david-saunders.net/uploads/1/3/1/4/131437208/luwenu_bizoper_jilinik.pdfIn PDF document text
    • http://kiraz.mifal.org/uploads/1/3/1/6/131636725/ruwodosagizujuliralo.pdfIn PDF document text
    • http://files.hitthatjuice.com/uploads/1/3/2/6/132695416/9938c6a2dfffca.pdfIn PDF document text
    • http://dezowi.curacaochessfederation.com/uploads/1/3/1/4/131454151/zajowami.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/1/0432/6676/9051/files/jimuzivakonagesuwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9925/1093/files/dadat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/5352/2600/files/mezefawujidogo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9502/4023/files/tiwipivafelazafunelij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nemopijudesukofareran.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9438/5575/files/celebrity_equinox_deck_plan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6071/4904/files/90984032347.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4340/4441/files/xomeboxusufebixubiw.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 2

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_off00006c3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C3D 5460 bytes
SHA-256: 9d6d9c73dc0b66d810dbc34fbb09473abca63e8d921fc9e9680ea0588fc74da1
font_01_sfnt_off00007eb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EB2 14868 bytes
SHA-256: 2f27b1d45994c3be7f7971eda3744e5fc756752b68f60fc257e5f82f1dfe862f

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