Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cf3385d6df84a20…

MALICIOUS

PDF

43.8 KB Created: 2020-08-02 00:47:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 66affc06265d9c0eb94735341a6cd457 SHA-1: 4ade41d90660efd00faf0a453ce74a671fa994f8 SHA-256: 4cf3385d6df84a20b3f164a3240a99bac6bee1b41e765247bb256f0892afbd09
194 Risk Score

Malware Insights

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

The PDF file contains multiple embedded URLs, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to an address and the wkhtmltopdf tool, suggesting a lure. The primary malicious URL identified is https://ttraff.ru/pify?keyword=2830+merrywood+drive+sacramento+ca, which likely serves as a gateway to further malicious content. Another significant URL, https://cdn.shopify.com/s/files/1/0437/1342/9655/files/34301942090.pdf, is part of a link farm, potentially used to improve search engine ranking for malicious sites.

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=2830+merrywood+drive+sacramento+ca In PDF document text
    • http://files.obsessiongreenhouse.com/uploads/1/3/0/7/130775368/8217788.pdfIn PDF document text
    • http://files.barrow-lane.co.uk/uploads/1/3/0/8/130813489/08e3afdfb4ad1.pdfIn PDF document text
    • http://files.hannasophian.com/uploads/1/3/0/9/130969663/nugefekefifenu_bosen_rusotu.pdfIn PDF document text
    • http://files.northshorenightlife.com.au/uploads/1/3/1/4/131408017/4044636.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/1/0437/1342/9655/files/34301942090.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7122/3446/files/22893354126.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7519/9391/files/1494218049.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4355/2416/files/pezunotijaxegaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3366/4408/files/74209400207.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2389/1618/files/kikaxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6995/5486/files/14110853857.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4512/5281/files/dragon_bal_z_mugen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2193/3466/files/59341632500.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8981/3909/files/wudugugusasamawixofu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6006/7480/files/bajanixafelafelu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6179/6248/files/26508253752.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_off00006026.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6026 5844 bytes
SHA-256: 2ef3bec805669f66977e4c4a685640c9976ef9ccd9ae58aa49d026694d064dff
font_01_sfnt_off0000740b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x740B 14896 bytes
SHA-256: 1a916efdf0ec43b97e608507ba37a58ca41cac77c33e00957087db89b16e4a00

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