Malicious PDF — malware analysis report

Static analysis result for SHA-256 2259cd14766ad028…

MALICIOUS

PDF

45.3 KB Created: 2020-08-11 18:53:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1d3bf4e0c885a969cb43dce94bcc7e0c SHA-1: 3aa6cedf436c2f2ed4994bcc8739f8da3ca668f4 SHA-256: 2259cd14766ad0283949c76f08146b0bcd4e7ced4f924ec72ec9e0ae50aee387
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one specifically pointing to a known malicious redirector infrastructure. The document body, though heavily obfuscated, also contains this malicious URL. This suggests the primary purpose is to redirect users to malicious content, potentially for SEO manipulation or to serve further malware. No scripts were extracted from this sample.

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.com/pify?keyword=barras+bravas+historia+pdf In PDF document text
    • http://files.kopou.org/uploads/1/3/1/3/131381288/nidaza_timagajeti_xemaxufu_serikoje.pdfIn PDF document text
    • http://files.alliswellcbd.com/uploads/1/3/0/7/130739351/dajadami_ruzajes.pdfIn PDF document text
    • http://wumik.randialexishickey.com/uploads/1/3/1/3/131384635/tuluselubiwofupupa.pdfIn PDF document text
    • http://files.mrschristinab.com/uploads/1/3/1/3/131398184/venumukosej-sadomamu-pariduzuxato-kosuretelude.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/1/0436/2862/6080/files/64139428745.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6952/8471/files/1718362411.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2512/9894/files/dikevogavudobolimomofeve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4133/3147/files/rakizus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4976/2459/files/72753954345.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7682/0890/files/research_papers_on_cryogenic_rocket_engine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0310/0832/files/amitriptilina_bula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/73768917897.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7176/6690/files/zasimazitubuzabomapag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5850/3573/files/16661164071.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7968/7574/files/22311445652.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0374/8260/files/the_economist_2020_free.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_off0000753b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x753B 5344 bytes
SHA-256: e00a87e307cb955a95725685f627986ce8fbc8c5e3f36f2ae72f0f8400d1f7f0
font_01_sfnt_off00008763.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8763 9700 bytes
SHA-256: f8b64de6a51b0029c3878ed2fe31db347c68d8a54a3c8a1d95595f7c703bec24

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