Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec4214fcdf875f50…

MALICIOUS

PDF

35.3 KB Created: 2020-08-19 18:51:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0ce08f487a9ee5b8bd764f2d850774df SHA-1: 5bff9e84b5ce03db7964c692f77fd2c61d8368b4 SHA-256: ec4214fcdf875f50a8272d4e39e0934bac0df508755922ba95ea3e1bb1b3cf94
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation. Crucially, one of these links, 'https://ttraff.cc/pify?keyword=lagu+bts+idol+ilkpop.+net', is identified as a malicious redirector. This indicates the document's primary purpose is to lure users to malicious infrastructure, likely for further exploitation or credential harvesting.

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=lagu+bts+idol+ilkpop.+net In PDF document text
    • http://files.isunsslha.com/uploads/1/3/1/8/131858540/123c177.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/1/0437/8935/3117/files/hitchhiker_s_guide_don_t_panic_font.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6152/6166/files/tirutafixo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6727/7469/files/sarawiloxowaxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0172/4580/files/68025098201.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4136/5922/files/dukagulakefafutatesoxezu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7379/7284/files/9376730988.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5096/6950/files/3356328010.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4390/3905/files/caso_clinico_de_anemia_hemolitica_autoinmune.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7249/5519/files/c._elegans_as_a_model_organism.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7216/7841/files/acrimony_full_movie_free_mp4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1648/7065/files/63493804983.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004097.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4097 3516 bytes
SHA-256: 8d93a34958479c78f637b6cbf2d9a2461ca8c6b4b381fcd88b53d53bc89a5d04
font_01_sfnt_off00004d29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D29 5208 bytes
SHA-256: ec733c83f766c1acd8827e9eb53b3f447069768a61ce2675f56697fba158a62a
font_02_sfnt_off00005ee9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EE9 9736 bytes
SHA-256: 6759c648c7d185ab103a617e9124d9b121ffb3888b9f388f6a49aa5604e168c6

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