Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb1c595ffeed5e33…

MALICIOUS

PDF

33.7 KB Created: 2020-08-09 23:12:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d650965d29c8943d6434af34484fb518 SHA-1: cbf77e35b465509324c7d50d78a5f6d1f43bc614 SHA-256: cb1c595ffeed5e338d51b6c42f4dcb86096b4c584f03b93a8980ac473398a76b
194 Risk Score

Malware Insights

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

The PDF contains a deceptive link that redirects to a URL associated with malicious redirector infrastructure, disguised as a free download. This is further supported by heuristics indicating a PDF link farm and a critical ML classification. The document body, though partially corrupted, contains the target URL and references to PDF downloads, reinforcing the lure.

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=marathi+kadambari+pdf+download+free In PDF document text
    • http://jegomut.calmlakefloats.com/uploads/1/3/2/6/132696323/gupelabewet.pdfIn PDF document text
    • http://mabinilu.vendinova.com/uploads/1/3/0/8/130874038/3457cb53745fdf.pdfIn PDF document text
    • http://julugad.donnastocker.com/uploads/1/3/0/7/130775934/lerubexelamabulubok.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/1/0438/6809/4629/files/andrew_w._k._party_hard.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8210/4478/files/87682809641.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6182/8001/files/jivoxetovagesivirodi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7920/5018/files/pujuvevirafimemutonasusa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4096/4759/files/80841179899.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7810/4728/files/corazon_espinado_tablatura.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7764/0092/files/45177503147.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0715/6128/files/sekemutonodelanu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0830/3002/files/energia_eolica_definicion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0076/5336/files/66542943752.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5240/0789/files/duchess_of_malfi_by_john_webster.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5170/3706/files/rufukofubizovepawe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1143/2857/files/33668667212.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3480/3352/files/96498479233.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 2

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_off00004795.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4795 5404 bytes
SHA-256: e38f8f68bde7ce233d82fe8f1e1f6dbd68be8db6d6a741462c424b67d08142a1
font_01_sfnt_off000059e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59E3 9328 bytes
SHA-256: 29dc1dbc632f9a329193e7c9d65ff0301e9fb67a932d3c0c9282f3a3662fa7e7

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