Malicious PDF — malware analysis report

Static analysis result for SHA-256 b10f35a5e4b00afb…

MALICIOUS

PDF

36.7 KB Created: 2020-10-10 21:46:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: b6f1752589bb75f72ebca30487c669b4 SHA-1: 724e694256d6465ed5b35665ea9064fe881cd36c SHA-256: b10f35a5e4b00afbfbb965431f03e9de91f318ba93487054d23b53eb9e2609c9
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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/pify?keyword=afk+arena+hack+apk+android In PDF document text
    • http://files.ohumchurch.org/uploads/1/3/1/3/131379639/329985cb7a5.pdfIn PDF document text
    • http://files.cpliofindiana.org/uploads/1/3/1/4/131453624/92a6b9bfd368.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/1/0465/3619/6255/files/kat_timpf_necklace_symbol_meaning.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/5043/4211/files/lg_306_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/8789/2132/files/46540457188.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6360/6422/files/93653566623.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1663/1973/files/la_bufadora_mexican_grill.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4886/9786/files/rpg_maker_xp_cracked_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5851/1510/files/selenium_webdriver_practical_guide_source_code.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd8fff0f-c2c2-49ea-916d-0fc5d967b8a5/62387010603.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b0cf897-cd91-4e82-8382-ad35e28eea05/66302123726.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2877d92a-32d5-4950-aeca-bcd2ccc306ba/judoxezefarofinabolek.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_off0000549d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x549D 5088 bytes
SHA-256: 926776732a3296e0954410ac474dfc3c638125435168a5563846722311c3e9a2
font_01_sfnt_off000065db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65DB 9612 bytes
SHA-256: 5c3dc367658d708c3260a18733ddfca7f80840ac2226c32a2ca918e2fa4a2920