Malicious PDF — malware analysis report

Static analysis result for SHA-256 c897245cb3c378cb…

MALICIOUS

PDF

44.3 KB Created: 2020-07-24 23:21:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 09dca254eaf8692df46905b77956a5a2 SHA-1: d06cd0021792ff3d96352c8f53084ab78547ff0d SHA-256: c897245cb3c378cb97ea1f626dd5f436eab4f4fbb222ea3bf05e572de1be28df
162 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning model and heuristics indicating malicious redirection and a link farm. It contains numerous embedded URLs, with a critical finding pointing to a known malicious redirector at 'ttraff.ru'. The document body is heavily obfuscated, but the presence of a large number of external links suggests a delivery mechanism for further malicious content.

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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=movies++telugu+wap In PDF document text
    • http://files.midwifeaddison.com/uploads/1/3/1/8/131856166/lixenufadoxugu_raxikilo.pdfIn PDF document text
    • http://files.shannondrhodes.com/uploads/1/3/0/8/130873907/1944747.pdfIn PDF document text
    • http://files.ameritexservices.com/uploads/1/3/2/6/132695995/633872.pdfIn PDF document text
    • http://files.furnaceproject.org/uploads/1/3/1/4/131409693/lodazeruxazaj.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/1/0432/3934/2248/files/xilaxitiwiluzeful.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2131/0880/files/buxararila.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0703/2990/files/10651254332.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0379/5877/files/64239907720.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3194/3585/files/jigupubagor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/buxidumex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3699/9833/files/dexawonetenukavivuxajuno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0319/9136/files/77253999407.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7405/2503/files/52875358303.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8451/3444/files/79357380505.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6529/4504/files/86069997134.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kupenase.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2269/6098/files/65938708685.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 8

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_off0000718d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x718D 4824 bytes
SHA-256: d64c94f80c31b414ed909984287aa652401a34db6dfcc2c8d3c7345d7348e325
font_01_sfnt_off00008227.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8227 9872 bytes
SHA-256: 2ccfbf49494a3fb3e5ae883be0cef2900ae25b4a3d240a219289a02f6b74df3c

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