Malicious PDF — malware analysis report

Static analysis result for SHA-256 45d2e10e37e5ec8d…

MALICIOUS

PDF

138.0 KB Created: 2020-07-25 17:29:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 550935cfb61bec95053367614d7ab077 SHA-1: a08879f2abf1cc822b6cafd29809df49d3c3c540 SHA-256: 45d2e10e37e5ec8ddae76fde3c8afed0d918d7e84f2769a75791a68e8b5ba0b0
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic indicates that the PDF links to known malicious redirector infrastructure. The document body, though heavily obfuscated, appears to contain keywords related to medical guidelines, likely intended to trick users into clicking the malicious links. The primary malicious IOC is the redirector URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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=esophageal+cancer+treatment+guidelines+nccn In PDF document text
    • http://files.salsaandtea.com/uploads/1/3/1/6/131607363/c2ca0b2770b.pdfIn PDF document text
    • http://files.dashandrizzle.com/uploads/1/3/0/7/130739146/d41bd7a327.pdfIn PDF document text
    • http://files.whiteoakumc.org/uploads/1/3/0/8/130873781/xoluluxetuv.pdfIn PDF document text
    • http://files.nariatlantablog.org/uploads/1/3/0/8/130814110/6600358.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/1/0434/1222/6206/files/palubopasigu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5835/6639/files/mujupereduzomaduluxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8978/8069/files/jikesavifunak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2698/7680/files/fotukobasisefoxuxapeparep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7818/9205/files/femavenefirugemilenupa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4504/4892/files/65106450838.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3349/3658/files/ronir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9722/6402/files/48751455120.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6559/0438/files/dosozokumokogijiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4093/9933/files/84915341337.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7351/2359/files/40474614744.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3407/3505/files/delogatepivezomogegawarur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/puwojadudabub.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 7

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_off0001e333.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E333 5324 bytes
SHA-256: b4076cdf1990becf9f7f6222abfa07525ffea7bf0fa05f9b7e7980d53e30816a
font_01_sfnt_off0001f51b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F51B 10868 bytes
SHA-256: cab8dace69f76c676632abbe3a0035b73b2d2c0c2a332cc60461ef2b1507514d

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