Malicious PDF — malware analysis report

Static analysis result for SHA-256 52ffcf8fe8b396aa…

MALICIOUS

PDF

40.9 KB Created: 2020-08-01 05:00:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 672d2615ae7ff97b51401a67f3c385d9 SHA-1: 670ab0ea708fcdf1ec38d86fd6109c2035e26dd4 SHA-256: 52ffcf8fe8b396aa8e253288bd66951c698a13967169da59caa837cc0ad29292
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass external link farm, with many links pointing to Shopify domains hosting other PDFs. One critical heuristic identified a link to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be the primary lure, directing users to 'ttraff.ru' with a book title as a keyword. This suggests a phishing or scam attempt using a link farm to obscure the 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.ru/pify?keyword=night+by+elie+weisel+online+book In PDF document text
    • http://files.thehwt.com/uploads/1/3/2/7/132710596/c6ba9c1.pdfIn PDF document text
    • http://files.jonathanedgingtonwriter.com/uploads/1/3/1/0/131070113/pujomilun_kepaf_wozukas.pdfIn PDF document text
    • http://files.karlielucas.com/uploads/1/3/0/8/130873921/1936102.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/1/0432/6935/7728/files/xakeba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4320/9895/files/16843565952.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5657/8206/files/xaziwovupedugubujil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6704/0163/files/gifoxenug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3096/0549/files/zupisotokupugalesazuwal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4117/7256/files/16172813685.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3811/3955/files/fiwujidurasotez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8022/9791/files/10652725767.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7706/6140/files/77880663403.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1816/6167/files/80464895382.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2253/8136/files/93636539138.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6617/1296/files/57907730474.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/23342697578.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0350/9914/files/35295266424.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_off000063bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63BF 5008 bytes
SHA-256: 3b7050af318d55c363f6ef8af7b8fa7ac96fe5817f1cf7d41155cb6ef3e5c56d
font_01_sfnt_off000074ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74EF 9848 bytes
SHA-256: 637b085d54fe809ab4e273fbbca2530b4423c46bac9a6777556f6b032c0216e1

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