Malicious PDF — malware analysis report

Static analysis result for SHA-256 e958745f8fc00126…

MALICIOUS

PDF

50.9 KB Created: 2020-08-08 20:28:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2f30f5827f04905bd739cb1df71a23fa SHA-1: 61863dea6970860b893c5ade56e832937b5ab2ee SHA-256: e958745f8fc001267dfe451a227adc6d932b4e785c2497049f78a20e71b43491
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous embedded links, with one specifically identified as a redirector to malicious infrastructure. The document body, though heavily corrupted, contains text fragments and URLs that suggest a lure for downloading a PDF, which then redirects to a malicious site. The ML classifier strongly indicated maliciousness, and the PDF structure itself points to a link farm designed for SEO manipulation to distribute malicious content.

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=catena+mundi+pdf+download In PDF document text
    • http://files.krystholdavisphotography.com/uploads/1/3/1/0/131069887/lezinifes_sukunoxibeno_wirakebepoxowo.pdfIn PDF document text
    • http://files.moorereplacements.net/uploads/1/3/0/7/130775260/zibitenugel-fuxinodivukute-tulesuku.pdfIn PDF document text
    • http://files.minasbeautysupply.com/uploads/1/3/1/4/131436978/solijegewir-fanigokukib-mobubudi-fagaxigo.pdfIn PDF document text
    • http://files.mjmoore-moose.com/uploads/1/3/1/3/131382346/wawefafugepi_rigefala_jatore.pdfIn PDF document text
    • http://lurebi.arsalynyouthforums.org/uploads/1/3/2/7/132740978/nobojige-radurujixovuxem.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/1/0434/3519/6566/files/litubowebozifuwulitimane.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5349/9046/files/powers_season_1_episode_9.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5017/1554/files/14203610942.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3588/5725/files/lerafem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5819/1768/files/72431595939.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9139/3702/files/annotated_code_of_maryland.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1030/8765/files/videb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7146/3831/files/tezilixufiriv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/19441108854.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/8484/4949/files/lord_of_the_flies_vocabulary.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_off00007bf5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BF5 4912 bytes
SHA-256: e7e387c10b1ff845d26eba75c699394932223d5714989e214109ea514c8c8fbb
font_01_sfnt_off00008caf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CAF 16588 bytes
SHA-256: 6b915fb0bd9e1afb085a271d93d20d3dceda9b42d0343861d113e10b72cc2f41

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