Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bdf1daaed767b06…

MALICIOUS

PDF

54.2 KB Created: 2020-07-31 07:15:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 686e09d4f669c7a40278c4c0ca57a37e SHA-1: f3f8cf36e4fc97cc0b38aef77ded38635722a72f SHA-256: 0bdf1daaed767b069d29ac9dd3e3e0fcfd1b7edfa9cfa2d1f5b79d024948ce29
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external PDFs hosted on Shopify, disguised as relevant content, which redirect to a malicious URL. This indicates a phishing or malware distribution attempt, likely leveraging a link farm for SEO poisoning. The ML classifier strongly supports the malicious verdict.

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=calibre+de+conductores+y+su+amperaje+m%25C3%25A1ximo+pdf In PDF document text
    • http://files.abouttimeband.co.uk/uploads/1/3/2/3/132303010/motajepenirejo.pdfIn PDF document text
    • http://files.fallonsdailytoast.com/uploads/1/3/2/6/132681769/9429494.pdfIn PDF document text
    • http://files.greenstonedesign.co.uk/uploads/1/3/2/7/132710772/da6b85c.pdfIn PDF document text
    • http://files.lcol.org/uploads/1/3/1/3/131398497/d86a2.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/1/0435/2134/3647/files/5803121410.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6331/1520/files/89997657029.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jazaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0292/1111/files/lidularetu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1688/6184/files/nusuxasa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9602/2933/files/womitegejefokupe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1023/6321/files/52608816218.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8844/5604/files/puparijobamepef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/nunaxove.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0682/8441/files/81067329866.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5362/8062/files/genugadukol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5598/9404/files/76261045308.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6190/3517/files/85729976513.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2834/9085/files/57346768863.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000797f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x797F 5824 bytes
SHA-256: 9e5f318f0484c79de217cac80a23b3b8f4207a2111f9946a27cdb1dbb2a82fd0
font_01_sfnt_off00008cb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CB5 11652 bytes
SHA-256: accd65e60875447a437357259d506119dd24a22a1ea063281c03d1471ed65b63
font_02_sfnt_off0000b253.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB253 16312 bytes
SHA-256: b2563e85233037e3c2780690ed1455257f868516b5a962e54e6ffe29314c9cb1