Malicious PDF — malware analysis report

Static analysis result for SHA-256 33ea7067a88bd44d…

MALICIOUS

PDF

45.0 KB Created: 2020-08-19 21:03:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d858df9508254b8eb1f1d183f7f3239d SHA-1: e1e9ee1962e9804dc8c6163e406ee19757152737 SHA-256: 33ea7067a88bd44d65e4e539b0bd0e79fe40b32ae20d852afd550a1b5c3481ec
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, many pointing to a redirector service (ttraff.ru) that appears to be part of an SEO link farm. This suggests a phishing or scam attempt, likely to trick users into downloading further malicious content disguised as legitimate documents. The ML classifier strongly supports the malicious verdict.

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=bise+sargodha+11th+class+date+sheet+2019 In PDF document text
    • http://files.pray4oaxaca.com/uploads/1/3/0/7/130776211/6394780.pdfIn PDF document text
    • http://files.openstarmaths.org/uploads/1/3/1/6/131637919/98fc8f5e.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/1/0432/1283/2932/files/employment_application_form_free_printable.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3400/2086/files/rexawusatedujolu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2249/0532/files/captivating_study_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2128/7067/files/cardiotonicos_farmacologia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6360/7445/files/duzisexoruwalutivisu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6890/0006/files/sugezaxoxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5861/6733/files/1994943446.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6267/3054/files/coffee_shop_business_plan_free.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 6

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_off000070b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70B6 5732 bytes
SHA-256: 775eada3dd46ec5963a64aafb03c460f9b9811bbe1b6326815b47285a6900b1b
font_01_sfnt_off00008428.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8428 10340 bytes
SHA-256: fcbe8b6fb72f89df92bd8f334bc0fc3db2328c323f43e956b537733a42767c29

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