Malicious PDF — malware analysis report

Static analysis result for SHA-256 e52cff30e1c354b5…

MALICIOUS

PDF

41.5 KB Created: 2020-08-17 01:13:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 186979a2dc38a2216c1303a60301a04a SHA-1: 57a6ea3e212a1e806af2086f5e53070608693aa2 SHA-256: e52cff30e1c354b5b246ca49e6c5e9eed1a689ff806f883b77ec3a6a9a5b7f0d
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. This suggests a link farm or SEO poisoning attack designed to lure users to malicious content. 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.ru/pify?keyword=assistive+devices+program+hearing+aids+form In PDF document text
    • http://files.danielabend.com/uploads/1/3/1/3/131381614/rolafuxotalu.pdfIn PDF document text
    • http://jigizafur.alisalman.ca/uploads/1/3/0/8/130874330/6146045.pdfIn PDF document text
    • http://filosabip.heidireneeaijala.com/uploads/1/3/0/7/130776716/092994b03f2a6.pdfIn PDF document text
    • http://files.afrhdevelopment.com/uploads/1/3/1/4/131482823/b4671a9e8a.pdfIn PDF document text
    • http://nukuxen.teiit-bg.com/uploads/1/3/0/7/130775503/tanuribexoxo.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/1/0428/5746/3971/files/56772790606.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8158/1209/files/kizid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5082/6919/files/jimedowaduzaladuji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7113/6154/files/momogixejufibitax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/8357326041.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0650/8701/files/59501892944.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3705/5393/files/2d_cartoon_maker_software_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6662/9032/files/41505073418.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2672/7580/files/majajifexowul.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 5

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_off0000619b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x619B 5584 bytes
SHA-256: a6b8a06cb4438ba41824588d9ef80696d5d168c400ab9a834b79c424768536e4
font_01_sfnt_off0000747a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x747A 10768 bytes
SHA-256: f0f2407a0c66b33d0f80742a30d787d2649fde88de57f80dd6f8c45be3acb54d

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