Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a68078e6ebfa4a7…

MALICIOUS

PDF

42.9 KB Created: 2020-08-12 10:40:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 22a3822e063c1b9c54d21bb1a1fb6425 SHA-1: 3971d4df0be0211eba0bcec66b75af88f87010db SHA-256: 8a68078e6ebfa4a7d132591033a5d2282bbe95f848cd80eaf045d0026fe0aab7
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link farm designed to appear as a "convert pdf to word converter software" lure, directing users to a malicious redirector. The ML classifier strongly indicates maliciousness, and the PDF structure is consistent with SEO-based link farms used for malware distribution. The primary malicious IOC is the redirector URL.

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.ru/pify?keyword=convert+pdf+to+word+converter+software In PDF document text
    • http://mamam.uncensoredtruthaboutmoney.com/uploads/1/3/1/4/131409090/03474c1bee872.pdfIn PDF document text
    • http://narime.skylergabelgroup.com/uploads/1/3/1/0/131070420/b935a939cd986.pdfIn PDF document text
    • http://files.maccarpentry.store/uploads/1/3/0/7/130738722/6431612.pdfIn PDF document text
    • http://bepezu.fabrizioatelier.com/uploads/1/3/0/7/130739561/9011408.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/1/0428/0667/3575/files/bufijakekuwoxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1548/7137/files/82134009091.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gekisemegudifusoledo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9040/1687/files/zewazoxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2057/3080/files/bobcat_soil_conditioner.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2436/7262/files/mawurej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6272/1688/files/lilly_cardiology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0181/3915/files/winnie_the_pooh_book_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4803/2663/files/annasaheb_patil_arthik_vikas_mahamandal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0780/1504/files/3705087939.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5671/7205/files/lodezefozegumelitenopa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2340/8032/files/39871090812.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0348/5092/files/51248324632.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 1

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_off00006b28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B28 5176 bytes
SHA-256: 5c7efa6517a230d6f83b4f5cecdc3ae3d7dff14563958fccfddd89fe1cfce994
font_01_sfnt_off00007ce7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CE7 9812 bytes
SHA-256: 86efb40c8a5cda21d84247e0355fce2509cdaf362a85d65e2c51c1d557806208

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