Malicious PDF — malware analysis report

Static analysis result for SHA-256 c33b7d5f1b63c9da…

MALICIOUS

PDF

45.7 KB Created: 2020-08-28 01:54:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 00315c1fb496700bc79d708815ce55d0 SHA-1: 1ac1557ca4724ab0d8d23a5c43303f0906dbbbd6 SHA-256: c33b7d5f1b63c9daec2450ffbc73e1eca01f989c7921d5c9a587a5d001700fc1
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing on a link to a known malicious redirector at 'https://ttraff.me/pify?keyword=waiting+ha+jin+pdf'. Another critical heuristic identified a mass external PDF link farm, with many links pointing to shopify.com domains, suggesting an attempt to game search engines or distribute content. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of malicious links indicates a likely phishing or malware delivery attempt.

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.me/pify?keyword=waiting+ha+jin+pdf In PDF document text
    • http://firufiz.year8religionlynam.com/uploads/1/3/0/7/130776760/zutan_fakujokemi.pdfIn PDF document text
    • http://files.terangajuice.com/uploads/1/3/0/7/130740066/2173758.pdfIn PDF document text
    • http://files.christinemcahill.com/uploads/1/3/1/3/131383665/vapupesav_wisusapose.pdfIn PDF document text
    • http://files.thelookbyus.com/uploads/1/3/1/4/131453990/nedunododaso_sawakenole_buxipe_badoxepunidawi.pdfIn PDF document text
    • http://files.floridatennismagazine.com/uploads/1/3/0/9/130969967/jamaritidepufi_bogutimuni.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/1/0433/0127/3758/files/18638996231.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2042/7157/files/mujegewor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6467/8817/files/bulepoxer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9907/8304/files/fugudesu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/5405/5843/files/jagixuwefoxizum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2150/8509/files/jekusuripibewoje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zenafepejeviwasi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2289/8584/files/amparito_roca_banda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6942/3269/files/20012973448.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6550/5952/files/kapasuvozotamulusuvironet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9641/6157/files/74325757584.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9802/9733/files/9360554493.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5396/4712/files/wetivupuxedajon.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000075dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75DD 5084 bytes
SHA-256: fb9b076fba69938c63bb8e50e493a6fd40be6f0a799346ab9193ef1552946ae3
font_01_sfnt_off0000873f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x873F 10088 bytes
SHA-256: daf696e4ca9f4e323b0b867d48b863dc48f05a90cadf8a937092fd0eaed76686