Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c3b66b490894249…

MALICIOUS

PDF

44.9 KB Created: 2020-08-09 02:45:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4c7e7f678f5bcd36d9ec458185482d76 SHA-1: 3dd2924e81e486f2eda3311b5d40f80cfc011a99 SHA-256: 9c3b66b490894249cfd0402c9381925f63e6904b0bde3d728080c29be9a4d094
194 Risk Score

Malware Insights

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

The PDF contains a large number of external links, including a redirector to a malicious domain, indicating a link farm or redirection attack. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=security+risk+assessment+pdf', suggesting a lure to a malicious site. The presence of multiple Shopify-hosted PDF links further supports the link farm heuristic.

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=security+risk+assessment+pdf In PDF document text
    • http://files.toymigos.com/uploads/1/3/1/8/131856381/61b8c1a.pdfIn PDF document text
    • http://files.stfcfoodnetwork.org/uploads/1/3/1/1/131164488/bab8837ce25028.pdfIn PDF document text
    • http://files.photosbacktolife.com/uploads/1/3/1/4/131453268/xaxifikeba_tumujajalopejub_kemurewagoxux_vebuwuxovozuf.pdfIn PDF document text
    • http://files.wedoliabilityinsurance.com/uploads/1/3/2/6/132682868/7794993.pdfIn PDF document text
    • http://rezifowo.annawinkowski.com/uploads/1/3/2/6/132681670/1217016.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/1/0431/1734/6965/files/4793014392.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8054/8505/files/dexuzetozamufonewilikozi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5208/9000/files/godovuwavagonusodufaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1405/4300/files/lariwib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2109/0471/files/35878563109.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1222/6206/files/91501364877.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7759/9383/files/jingle_bell_rock_chords.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8163/7794/files/56803367370.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3346/7807/files/historia_de_la_bandera_de_panama_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4583/8232/files/tilaremufuzovesike.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7929/5383/files/24562361079.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8742/9781/files/mcdonalds_uk_menu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3173/2119/files/xepajafamogenixubaf.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_off0000719f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x719F 5540 bytes
SHA-256: a4ff6915f88d7ae8c035fe39ae4698e2b418178d772e3576261091b160f6991b
font_01_sfnt_off00008473.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8473 9856 bytes
SHA-256: 87a0981657d6beac98167094e1a8f566c53c27a1a37d067ef03674fe44b7c1cd

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