Malicious PDF — malware analysis report

Static analysis result for SHA-256 663f5e936f753302…

MALICIOUS

PDF

42.8 KB Created: 2020-08-23 01:42:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e6250a32629b5a11402b3861ab55026d SHA-1: a983a5b02f541e170b849517c2f9b011cefae2d7 SHA-256: 663f5e936f7533025ff2b1058e1329b575b60d432d74f43186d9938d491c6eeb
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, including one to a redirector at `https://ttraff.cc/pify?keyword=free+translation+pdf+to+word`. This redirector is associated with malicious activity, suggesting the document is part of a phishing or scam campaign. The presence of numerous links to Shopify-hosted PDFs indicates an attempt to create a link farm for SEO manipulation or to host a large number of lures.

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.cc/pify?keyword=free+translation+pdf+to+word In PDF document text
    • http://files.siliconvalleystalent.com/uploads/1/3/2/8/132815882/2090394.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/1/0430/8982/1847/files/88493864675.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/2756/2401/files/58668875646.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5019/6392/files/vujug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5081/8981/files/95844111716.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8843/5613/files/articles_on_national_action_plan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7218/3710/files/95923745723.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3305/1814/files/14756350071.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6378/6137/files/spanish_grammar_in_context_3rd_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/3537/0407/files/zolowasutirofatefap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3845/7501/files/saxugogaxinijuvazelumam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8632/2600/files/5130872062.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_off00006b44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B44 5084 bytes
SHA-256: 74ceea2287c01f15ab6f38505d493fe3125158c05806a1fd5e1611d519d2a4f9
font_01_sfnt_off00007cb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CB1 10024 bytes
SHA-256: 8520cbabe8640cc579359256dba8298c7155b8b02ae2abb817c7f7701815919f

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