Malicious PDF — malware analysis report

Static analysis result for SHA-256 078fca1839935ac7…

MALICIOUS

PDF

53.9 KB Created: 2020-08-07 05:04:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 83386b9be1411819f0c9de28f2a527c2 SHA-1: cdc16be042af51e090af31420e9714f9746d9d28 SHA-256: 078fca1839935ac773791fb21a40b3ebef92aa3106a517ab06519e88356c8d7f
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing indicating it redirects to known malicious infrastructure. The primary malicious URL identified is 'https://ttraff.ru/pify?keyword=centrifuge+types+pdf'. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect the user to a malicious site, likely for phishing or malware delivery. The ML classifier strongly supports the malicious verdict.

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.ru/pify?keyword=centrifuge+types+pdf In PDF document text
    • http://files.circap.org/uploads/1/3/1/3/131398097/zeduwagamakiw.pdfIn PDF document text
    • http://files.trahk.org/uploads/1/3/0/9/130969220/51ab9fb2.pdfIn PDF document text
    • http://rasipuf.husky.is/uploads/1/3/1/1/131164239/9415631.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/1/0437/9879/0301/files/38705162401.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/3173/3159/files/bijidunerirudej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2758/5430/files/kelekupovu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9094/3904/files/titaruwepagafebep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6213/1869/files/69294315036.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/1534434062.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1148/0472/files/barriers_to_intercultural_communication.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0635/9714/files/jadulukojibi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/gotigozigufulonitogiduson.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7514/9719/files/kanozejunutid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5453/7624/files/anemia_falciforme_ministerio_da_saude.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9850/5369/files/74326977831.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9278/5818/files/www_nseindia_comn.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2042/5115/files/56788087206.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_off000094d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94D8 4976 bytes
SHA-256: 5ef05b34e7ccbdc3b6ef56ffb0116b5ecb9f82203c6ae7c4c153988b7e14fc74
font_01_sfnt_off0000a5e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA5E3 10784 bytes
SHA-256: 95439f4b44e13859780b17cac18badacdecbab8ae6a3d889310813dc9e08439b

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