Malicious PDF — malware analysis report

Static analysis result for SHA-256 3574e0e994b1f613…

MALICIOUS

PDF

45.1 KB Created: 2020-10-31 01:24:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 79e1e6ac3e205fb4f68f9647044832b3 SHA-1: ede7f64bf314ca381cdbbf808b9f176f9984f3b7 SHA-256: 3574e0e994b1f613a47880a91dcbc181c1c363f65c3b21b3be9070dc61987225
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://ttraff.me/123?keyword=national+family+insurance+agency In PDF document text
    • https://cdn-cms.f-static.net/uploads/4382614/normal_5f98409ebfba4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366319/normal_5f87c61b2771f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368230/normal_5f90a3cedefb1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403819/normal_5f9c9c5f41a81.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00007161.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00007161.bin)
    • https://cdn.shopify.com/s/files/1/0266/8970/0032/files/adapt_sound_apk_cracked.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e28c8614-0f7c-4f8d-a232-1a63afbbced4/gta_v_cretsiz_indir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/4823/3881/files/35950473117.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/2530/9108/files/can_chromium_os_run_android_apps.pdfIn PDF document text
    • https://s3.amazonaws.com/rekawexuretowo/laxozedojikudagosokiga.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77d65c27-b60d-43ee-b467-8e58e72c8907/posowujejepudonudud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/6321/1701/files/lean_six_sigma_black_belt_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2265b7c-1467-4007-8d0a-ed6fd5443925/3404186456.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c3f8a15-6a16-48fe-98ef-c0472d735534/principles_of_marketing_17th_edition_by_kotler_and_armstrong.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 extracted file (font_00_sfnt_off00007161.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007161.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7161 5272 bytes
SHA-256: 2e47ed0fe96f6017c306613eb2251577fc1dca60099dfb4a4161faba4fb14395
font_01_sfnt_off00008352.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8352 10640 bytes
SHA-256: 9336f8f03132a860b12816ab6b39750195f756b4cdb5433dd1207439c9487343