Malicious PDF — malware analysis report

Static analysis result for SHA-256 64fb159f1d86792f…

MALICIOUS

PDF

36.8 KB Created: 2020-07-27 15:08:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2459820214818c862ea18af61f7c9b2b SHA-1: 790160a0f7ef1669e5b1a778560344b6007cc904 SHA-256: 64fb159f1d86792f4bfe728344a7f0b83af9ca3dcc02aeefca8dff6a1a5aa923
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, suggesting an attempt to drive traffic to malicious infrastructure. The document body, though heavily obfuscated, appears to be a worksheet lure. The primary IOC is the redirector URL, which is likely used to deliver a secondary payload or phishing page.

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=capitalize+book+titles+worksheet In PDF document text
    • http://files.lovephukettours.com/uploads/1/3/2/6/132681694/ligebezupekona-jaregizab-biwupe.pdfIn PDF document text
    • http://files.scenealongtheway.com/uploads/1/3/1/4/131438211/rabevap_totowibinug.pdfIn PDF document text
    • http://files.tomnet-utc.org/uploads/1/3/1/3/131379718/1792138.pdfIn PDF document text
    • http://files.skyleblanc.com/uploads/1/3/1/6/131637034/sabosutukitikusuwiw.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/1/0436/0732/6882/files/1107588628.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1496/3868/files/99151915959.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6464/0159/files/52674400889.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4111/1716/files/17874929030.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0521/3847/files/fijof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2930/7287/files/ranisub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0295/1842/files/68075609359.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1147/2541/files/sujiwigubipogerezamoxarim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4229/0336/files/25257494816.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3731/9590/files/93367034497.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4646/8769/files/69644474086.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_off0000541e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x541E 4956 bytes
SHA-256: e9b5cdb48bd23fc6e3124abc0b6fc8d935d0cd09721267cb50dd5284fe83b2c3
font_01_sfnt_off00006521.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6521 9620 bytes
SHA-256: e574a638e44ca9dabccb00c27256535511c17a04f0747194c0909b3bd019603e

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