Malicious PDF — malware analysis report

Static analysis result for SHA-256 26bbd141f0c5c24c…

MALICIOUS

PDF

40.7 KB Created: 2020-08-20 13:29:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 15389a7f74373cd34741c4c80a18472b SHA-1: 0f14cad22487a7c7c092103423738e4dea197c58 SHA-256: 26bbd141f0c5c24c1561e6c0a698fd8bd59c7eb2e1f1e91b0d0eb707d503a51c
194 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics indicating malicious redirector links and a link farm. The document body contains a URL that points to a known malicious redirector, which is likely used to distribute further malicious content. The presence of numerous external links, many hosted on Shopify, suggests an attempt to obscure the final malicious destination.

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=kung+fu+big+league+full+movie In PDF document text
    • http://lufow.kidacademy.org/uploads/1/3/2/8/132814930/9108716.pdfIn PDF document text
    • http://refajilo.houseofgeekiness.com/uploads/1/3/2/3/132303382/963fa.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/1/0439/1262/6344/files/77414721939.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8514/3965/files/chapter_1_ccna.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2135/3639/files/dikasifuregazumi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8131/0114/files/51580206112.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71062637782.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/1295/1961/files/que_es_dieta_astringente.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6700/7386/files/16246192913.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9375/2997/files/5314933368.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1430/7496/files/sanijukipadaponulurutawem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9807/1449/files/13770128324.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7354/5116/files/74596626579.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6585/1542/files/zuvebojatokejazimax.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_off000060f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60F6 4980 bytes
SHA-256: e82d429d75afebab63e9cac12a756e93270cfa9db511a3d2f9d82c4fa4c544e9
font_01_sfnt_off000071ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71EF 10608 bytes
SHA-256: 9fec9ef4ce1e5600b9a2ad40d85e78b77a3503c509c673cea1e2b8eb8df545fe

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