Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4a10aca803bd5cb…

MALICIOUS

PDF

35.2 KB Created: 2020-08-17 05:40:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 34c0de717c2cd6177e545cb095865227 SHA-1: c6f45d8e76a82b0b8151bd30fc76fbaf6338e018 SHA-256: f4a10aca803bd5cb0fdd4bca1b5658b976289540415db780603402e3b998c700
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.ru, which is likely used to obscure the final malicious destination. Additionally, it hosts a large number of SEO-optimized PDF files on Shopify domains, suggesting an attempt to manipulate search engine results to drive traffic to malicious content. The ML classifier also strongly indicated maliciousness.

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=agnisakshi+serial+telugu+naa+song In PDF document text
    • http://files.nikkicshairstudio.com/uploads/1/3/1/4/131407705/wujise-voduvewetu-doresi.pdfIn PDF document text
    • http://files.friendsandfamily.eu/uploads/1/3/2/6/132681463/8539b20c.pdfIn PDF document text
    • http://zafoful.wdspa.com/uploads/1/3/2/6/132681647/2121003.pdfIn PDF document text
    • http://files.niallkinsella.com/uploads/1/3/1/4/131453713/vaboj_serewifujuzepo.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/1/0430/6377/1293/files/teks_asmaul_husna_latin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0684/3288/files/20209327871.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5636/4711/files/53976453588.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9658/1020/files/javanidisuro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8858/4605/files/renuwegufov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3042/9346/files/wikipiru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4350/9656/files/georgia_driver_s_manual_2017.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1434/8197/files/gomeluvol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1859/8038/files/fevurifuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9096/8729/files/gixobefenogerakofo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3858/6518/files/greek_alphabet_list.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_off0000456e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x456E 5000 bytes
SHA-256: 3ca001168372c1eb9ef23aa8c55a86daab8310cab55f3a162c494a827e596972
font_01_sfnt_off0000566a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x566A 13416 bytes
SHA-256: aa1c8f53238b32ec595f157234a41bc8b315ec801f5775e1f4a37f9bf1f2b260

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