Malicious PDF — malware analysis report

Static analysis result for SHA-256 33c30e48769fe78d…

MALICIOUS

PDF

48.0 KB Created: 2020-08-13 21:59:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 29e499027105ede8086f9711731bdba1 SHA-1: dd39de5149614942a04a91d51207c8f0e130146f SHA-256: 33c30e48769fe78d28b061983133c8767d0a7e4f3c6ffa6d66bb85e893555c06
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a quiz answer, aiming to trick the user into visiting a malicious website. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external resources. The ML classifier strongly indicated maliciousness, supporting the presence of a malicious redirector.

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.com/pify?keyword=company+logo+quiz+answers+level+9 In PDF document text
    • http://files.pdxprays.com/uploads/1/3/1/3/131383018/wikixawasagi.pdfIn PDF document text
    • http://files.pljconstructioninc.com/uploads/1/3/1/4/131453247/sufakoxok.pdfIn PDF document text
    • http://files.plate-deals.com/uploads/1/3/0/7/130775707/magaw-sasivixalo-morawiled.pdfIn PDF document text
    • http://files.mjkyarchitects.com/uploads/1/3/1/6/131607363/8318575.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/1/0437/2814/2501/files/resakud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4405/9806/files/carbonates_and_evaporites.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4257/0402/files/sirir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0604/2013/files/27207799470.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0364/2007/files/wheel_of_time_book_11.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0349/5071/files/rapprochement_bancaire_cours_complet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6116/5723/files/puxosop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/45292738862.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7630/4544/files/espresso_english_prepositions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9956/2911/files/41345479162.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_off00007979.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7979 5632 bytes
SHA-256: 012b9092a86782fed13c52ddf1c93fd102beac7b329c9f7f421be3619fed8327
font_01_sfnt_off00008cac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CAC 11564 bytes
SHA-256: dd83fc4b0d3157c0ee45e733c6154ceff46bda5f0d1fb9ebfd0eea6475db5b53

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