Malicious PDF — malware analysis report

Static analysis result for SHA-256 f10840d91661bc81…

MALICIOUS

PDF

38.8 KB Created: 2020-08-07 02:24:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 67dd1a84b6623dc9a6ed08142d08603c SHA-1: df8a83b36d9e66c7f044391a07a6ed2091ced635 SHA-256: f10840d91661bc819c6234ed3015c24272012f749024784fd85e77a9b038a779
194 Risk Score

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=calcined+clays+for+sustainable+concrete+pdf In PDF document text
    • http://files.divacare.co.uk/uploads/1/3/1/3/131378990/2822969.pdfIn PDF document text
    • http://files.everettqualitylandscaping.com/uploads/1/3/1/0/131071035/8315037.pdfIn PDF document text
    • http://logiked.pineridgeretreatcenter.org/uploads/1/3/1/6/131606349/2822398.pdfIn PDF document text
    • http://files.donnamilburnphotography.com/uploads/1/3/0/7/130775759/4030849.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/1/0427/5824/2470/files/61184352123.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5149/9170/files/applied_science_level_3_revision_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1883/0503/files/17180869329.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0703/9895/files/62037632758.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4090/5128/files/ada_espaol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6372/9557/files/julofesijezedi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2140/9184/files/venananidewukejo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9936/3222/files/nowoje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pujofupokutesigitugut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8558/6849/files/wiraguguvusewazumo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nemubowakupupoda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/safuginogatujato.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4384/0412/files/lagikodizi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7976/2073/files/vesakotagejenamu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/23158701460.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 6

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_off0000592f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x592F 5296 bytes
SHA-256: 447b319b442ec87f6b77d0e0d140a7fa68091a060c6d834ea8ec82f6476e5209
font_01_sfnt_off00006b42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B42 10184 bytes
SHA-256: c879cb14abd3f602b60ab5de1545781ff3a06214939c1576b1ce8a951f098cbe

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