Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3cdfc7ca9a47a05…

MALICIOUS

PDF

48.5 KB Created: 2020-10-16 14:48:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 9265805f53b4fc315d4b4251efe7a52e SHA-1: 6295fa34c565454280cc1009cc4dab35e6141aa2 SHA-256: c3cdfc7ca9a47a050a148ec510a88fee367d7fdb7fc132f5296767aedf071842
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.me/123?keyword=robert+t+kiyosaki+cashflow+quadrant+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366360/normal_5f8722dc4ab10.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366351/normal_5f87221c9ff0d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366057/normal_5f8934f31d514.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366407/normal_5f8725f72dbf3.pdfIn PDF document text
    • https://nubojubixuxo.weebly.com/uploads/1/3/1/4/131410311/0a45d.pdfIn PDF document text
    • https://xisubuto.weebly.com/uploads/1/3/1/3/131380177/dawasexurijoxe.pdfIn PDF document text
    • https://rakamukomegu.weebly.com/uploads/1/3/2/6/132681656/b5b46ffb5.pdfIn PDF document text
    • https://lotagixowila.weebly.com/uploads/1/3/1/1/131164100/sapozokuwad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369783/normal_5f892e914e437.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366357/normal_5f88f886b7233.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369927/normal_5f87e460a036d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365646/normal_5f87173e1789a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367287/normal_5f89400a27d8c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/a2bdfc2f-1451-4fbd-af44-cb16150ecdaf/9565101596.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4828/7904/files/45061829618.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/2099/4720/files/google_sheet_next_line_in_cell_ipad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5591/4918/files/talking_tom_gold_run_hack_apk_outfit7.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/4793/1042/files/transaction_cost_theory_corporate_governance.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0491/7349/5974/files/construction_accounting_and_financial_management_solution_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/2006/1341/files/malepujomiwox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/0383/9140/files/engineering_physics_laser.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64D1 5656 bytes
SHA-256: 5f8189af7a094f745673dbba47dbbe4a31272e5ed75218cc26ab755b170a1931
font_01_sfnt_off0000780e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x780E 15028 bytes
SHA-256: 636bc072f360bedc16e84bdfd7a13a391294d214d407306ee15f4cb921a7a154
font_02_sfnt_off0000a680.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA680 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176