Malicious PDF — malware analysis report

Static analysis result for SHA-256 124e2c04ef57b38b…

MALICIOUS

PDF

43.0 KB Created: 2020-10-04 04:48:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 84e2779009a238e7f74f33f12729493c SHA-1: d9284f2bdbbac207a5809d16ad006ccb90afcd2f SHA-256: 124e2c04ef57b38ba38536066c7423e781acbc4ae674aab8d1696e5dd0d66639
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://gettraff.ru/strik?keyword=free+kids+book In PDF document text
    • http://files.backcreekvcllc.com/uploads/1/3/1/4/131452733/999c2a8c049c610.pdfIn PDF document text
    • http://files.namastau.lt/uploads/1/3/0/8/130873849/3962140.pdfIn PDF document text
    • http://jitisipop.graywolfpestcontrol.com/uploads/1/3/2/7/132741508/5948697.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/1/0440/6257/2696/files/62662895486.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3062/5950/files/qyt_kt-8900d_user_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8066/3715/files/83121011246.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/7916/6873/files/how_to_become_a_child_life_specialist_in_florida.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2382/6085/files/jokevuvufaxekodusebepatas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8831/3506/files/66525809963.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/2505/2060/files/jukufibonile.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/2480/5799/files/african_american_hyphen_or_not.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5877a0a5-0bfb-44a0-818a-7df0e4cf1727/5190476436.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d83a475-d52b-4648-83df-665647eb976a/87063521964.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c783b363-a9d3-4f7b-a039-11479cc4bb70/xunosamugixuxesagexiresiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b481be08-8026-4fa0-8ad6-8f1a92811f69/11521614347.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 2

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_off00006cfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CFB 4736 bytes
SHA-256: 38095e099c0a641e6cdda92080f161e2201385206e0c475ffedfea219b1e1c40
font_01_sfnt_off00007d26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D26 10036 bytes
SHA-256: 98ffefe37b7ee0e25694c50926e24388d6a6bcf4de8761b62ca336ad2f903264

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