Malicious PDF — malware analysis report

Static analysis result for SHA-256 4905d64c8a2eefb5…

MALICIOUS

PDF

35.3 KB Created: 2020-08-24 02:03:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ca86324edef026b13b397e4fb314ef8b SHA-1: fe7980c5dd434295a4f071aa2fbc110b73cd99a9 SHA-256: 4905d64c8a2eefb55f9238ef5cda49d68ffa4753abfa4b5a8e942ca777360832
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, many pointing to a redirector service (ttraff.com) which is flagged as malicious. The document body itself is heavily obfuscated but contains the same redirector URL and a list of other URLs, many hosted on Shopify, suggesting a link farm intended to obscure the ultimate malicious destination. The ML classifier also strongly indicated maliciousness.

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=b.+d.+e+full+form In PDF document text
    • http://ratawopo.marcelwesdorp.nl/uploads/1/3/1/4/131482952/sinujipoxamew_divupuzabike_jivewused.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/1/0430/1009/7313/files/arcing_fault_in_transformer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9562/1796/files/54067193773.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/0531/3946/files/kundalini_awakening_books_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5351/3880/files/simple_java_game_code.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0263/4148/files/javusatenugugar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2790/6206/files/70571346911.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7812/3669/files/85960047983.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5643/8165/files/gaziditisisavenebe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/69298849274.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5913/2054/files/arrest_of_descent_adalah.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7826/2689/files/jubevuvibefefotepovuxa.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_off00004e49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E49 4748 bytes
SHA-256: 0a3db4e14b2f7e7032114415da3b927901d32d9f6d19d955d82ed6d14488c082
font_01_sfnt_off00005e52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E52 10112 bytes
SHA-256: 87394e66aca7dbad9782671d5685ef637718861aff0f593e7e3e6aef35423d33

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