Malicious PDF — malware analysis report

Static analysis result for SHA-256 b617869a81e93986…

MALICIOUS

PDF

39.0 KB Created: 2020-08-19 10:05:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 93facbc246aea248126e5cadb54a7b00 SHA-1: 121b2be5e3b28ae7f4d50265ef47429f5255ff0a SHA-256: b617869a81e93986bf22836e5dc59c562103ae443322e9fa71c92bf773b08574
202 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector. The document body, though partially corrupted, contains text related to file conversion and includes the malicious URL. The presence of a 'download button' heuristic further supports the lure-based attack pattern. The primary malicious URL is https://ttraff.ru/pify?keyword=convert+corel+x6+to+pdf+online, which is likely used to redirect the user to a malicious site or initiate a download.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=convert+corel+x6+to+pdf+online In PDF document text
    • http://files.lrse-nd.org/uploads/1/3/0/8/130814235/3159325.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/1/0435/0282/9734/files/49547742941.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5131/7408/files/jerimozolamapubepotaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8741/0840/files/76424401621.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0575/2997/files/tatipujoxogisapuka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2331/7662/files/25757386029.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4333/2000/files/16894792136.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6845/6088/files/mafuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9227/9460/files/lolokuxerov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/rurunonigenezuviguberufa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2388/2645/files/16455781297.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2552/8989/files/google_docs_to_word_converter.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 3

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_off00005ba3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BA3 4948 bytes
SHA-256: 883c8fcdd4bbd4fb1b0a810c4a845460d7d78233daa75d9ab17b885f575bc38b
font_01_sfnt_off00006c96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C96 10128 bytes
SHA-256: 64fa511a91da31d2075b857141eebf2607e09c1002b2a5430617c049a3f250d9

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