Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d8a17aa3cdeb8fb…

MALICIOUS

PDF

51.2 KB Created: 2020-07-31 14:56:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: be92ff00e20f4dcedd92dbca60deafcb SHA-1: 3d33096753d7a175df0da31fb887e09f8a1073f6 SHA-256: 1d8a17aa3cdeb8fb698849db11164cb1815691c76f8cfd69eed4024f58f21fec
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, includes text related to searching for a PDF, suggesting a lure. The presence of a large number of external links, many hosted on Shopify, indicates a link farm designed to attract traffic and potentially distribute malware or phish users.

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.ru/pify?keyword=suddenly+last+summer+full+text+pdf In PDF document text
    • http://files.anabhra.com/uploads/1/3/0/8/130874317/447655.pdfIn PDF document text
    • http://files.edusteminitiative.org/uploads/1/3/1/4/131483336/2590755.pdfIn PDF document text
    • http://files.slk-photography.com/uploads/1/3/2/6/132695334/00cda464c.pdfIn PDF document text
    • http://files.alexanderecology.com/uploads/1/3/0/8/130874647/7820649.pdfIn PDF document text
    • http://files.jjartmedia.com/uploads/1/3/1/1/131163854/5168181.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/1/0428/8105/6931/files/daxuvoxesemil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6451/6005/files/labikerimimopemut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8863/4263/files/zafawulukivekuzesidas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/9680354999.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3622/9277/files/59850814462.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2009/0535/files/zasodaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9972/4703/files/34408520659.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5374/4279/files/33121938860.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/26450106566.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6268/0984/files/57554588833.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1982/0446/files/15271887708.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2834/9085/files/lufibagek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6255/0940/files/86804751377.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 8

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_off00008acb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ACB 5184 bytes
SHA-256: c4e79c7cfa0aab7f2e14b661ffaed8e0d7d02c75d97e7ba500b8b8b06b2128e1
font_01_sfnt_off00009c53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C53 10228 bytes
SHA-256: a40ccbd7583fff563c648cea05467da2abbcb7afae2fb331bfe72d0e8311c054

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