Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc78d31e68f035ae…

MALICIOUS

PDF

50.2 KB Created: 2020-08-22 10:32:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 930b3b62fe903272beeda6c9cc85e59e SHA-1: c96da90a1117ddafaf91f00eaf4247364c76c782 SHA-256: cc78d31e68f035aeec810fb1ee93fee63d740d3b734d021b1e951816e263644a
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link and a PDF link farm. The embedded URL points to 'ttraff.ru', which is flagged as a malicious redirector. Additionally, numerous links to PDFs hosted on Shopify are present, suggesting a link farm designed to attract traffic. The document body contains obfuscated text and URLs, reinforcing the malicious intent.

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=brevete+reform+pistol In PDF document text
    • http://files.restorativeintegration.com/uploads/1/3/1/4/131453399/e4490.pdfIn PDF document text
    • http://files.lakeoftheoaks.net/uploads/1/3/1/4/131455475/f6849b18.pdfIn PDF document text
    • http://files.federicoroncarolo.com/uploads/1/3/0/7/130776152/jokamoluvo-wuludumodor-sutefivijirivel.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/1/0436/8406/9526/files/fokowofu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4466/7553/files/arabesque_1_piano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9353/2573/files/jimobijoxefajel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2290/1663/files/64121483120.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1575/6181/files/muxezaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5535/7852/files/jomibetilotolotimowi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8733/1481/files/atrahasis_testo_completo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6062/5562/files/16206826358.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2853/6731/files/vokize.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_off00008671.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8671 4944 bytes
SHA-256: fcfc20da40503b788094d4a118358439482ac77762493e7fb67eec33224ead47
font_01_sfnt_off0000973d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x973D 10728 bytes
SHA-256: 9aad04cf9b6e9e321ad93ebabb8fb14fc05ef1d45aa73616edbee24180af3d07

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