Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf0fa588269fc7bc…

MALICIOUS

PDF

63.2 KB Created: 2020-10-22 00:03:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 3d6b7067bd3b57988202ded26ac37ee7 SHA-1: 72d7e5ecbf8e0b0aaf32eb1991b0954149f82058 SHA-256: cf0fa588269fc7bcf7b5054f53ddfbbf0cfda360083af5f36db884a237f9c17f
234 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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=find+my+watch+android+wear In PDF document text
    • https://cdn-cms.f-static.net/uploads/4390680/normal_5f90137fc5051.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391620/normal_5f9009af949f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366011/normal_5f8e6b92b3d46.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373259/normal_5f8c9dfd49d84.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379379/normal_5f8a99989ea66.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366048/normal_5f86f61f943b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368223/normal_5f883b98d1d50.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369920/normal_5f886eab8e035.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376098/normal_5f8b6130cbab7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371790/normal_5f8994c5b42f7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369904/normal_5f8d5db208c24.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379489/normal_5f8c95bec9eff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366389/normal_5f875cafd038e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366351/normal_5f8a4f99e9f9d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366324/normal_5f87274ab3089.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378599/normal_5f8a47fb8eeda.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/1/0266/9346/8347/files/koboraxiwug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/0947/2188/files/retefilememamijorijaxekam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/5328/4008/files/baixar_dicionario_portugues_espanhol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8204/5853/files/40890410396.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8219/4847/files/thai_lottery_result_chart_2014_full.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/7208/5926/files/driving_simulator_2020_mod_apk_unlimited_money.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b8d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB8D1 5120 bytes
SHA-256: 684fd5a1a9060c925797b37cbb9343505756d9c2b1835cebc1676a5d8a1abbf3
font_01_sfnt_off0000ca18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA18 10900 bytes
SHA-256: eead94adf5fb96459d422ec2dbec07a30b1f3dfaa2364fda6d4a9dfdcbf79bed