Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3751b7be05f7523…

MALICIOUS

PDF

41.0 KB Created: 2020-08-09 02:42:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5516784ef8890e11fad50a2f9db3a230 SHA-1: b89263ac44238a7aaf90d6a7babed6336e9c946b SHA-256: d3751b7be05f7523f640da6635ea446bf7b61d8dfcc7271b441d766ad63d42a0
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link and a link farm. The document body, though heavily obfuscated, contains text related to 'Christian books in urdu pdf free download' and the malicious URL. The primary malicious URL, https://ttraff.cc/pify?keyword=christian+books+in+urdu+pdf+free+download, is likely used to redirect users to further malicious content.

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=christian+books+in+urdu+pdf+free+download In PDF document text
    • http://files.leannewaterhouse.com/uploads/1/3/0/7/130775519/xelopevowubisasu.pdfIn PDF document text
    • http://files.monashsama.com/uploads/1/3/1/0/131070612/rorupu-pewadanuga-joxanaxi.pdfIn PDF document text
    • http://files.stpetersharbourlighthouse.com/uploads/1/3/1/4/131453574/4647872.pdfIn PDF document text
    • http://files.nmtpestcontrol.com/uploads/1/3/0/7/130739783/kiraz.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/1/0434/5082/6919/files/tusodabamoxit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3592/6434/files/zabuximisipijini.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9799/5941/files/old_balarama.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3943/9510/files/ripogixu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0802/3966/files/nonprofit_bookkeeping_and_accounting_for_dummies.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7727/0692/files/schwerbehindertenausweis_antrag_rlp.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4932/0610/files/everyday_writer_5th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8452/9310/files/2573306456.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1780/3675/files/bufoguran.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6628/6490/files/6552209270.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_off0000598c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x598C 5332 bytes
SHA-256: 57454dab684691af417040ec5871bcf3479aee5fb18170908055326672e81f68
font_01_sfnt_off00006bab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BAB 13796 bytes
SHA-256: 43bc18c0e500fb83651156f14c836a77e1a2aea153ffa6bae86be5cf4e9db654

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