Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f932f59b4b34983…

MALICIOUS

PDF

73.1 KB Created: 2020-10-26 04:24:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: a63e05ce8ca8a89031f006b608954bad SHA-1: 42bc849f96c6e4eb58c4063e3dddb1dbd3f65719 SHA-256: 2f932f59b4b349831281a31f1f5a8a104f2ade74e62f6ac440c9bbae8dfdd582
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://cctraff.ru/aws?keyword=aaker+1991+managing+brand+equity+pdf In PDF document text
    • https://xepuxewezikute.weebly.com/uploads/1/3/4/4/134437058/kugojujuti-xudofenimimura.pdfIn PDF document text
    • https://vonubaxuted.weebly.com/uploads/1/3/1/4/131452839/lasezuvafuji_kabonudisa.pdfIn PDF document text
    • https://rulomegujenuguv.weebly.com/uploads/1/3/4/3/134329868/24bac59cf5dcdef.pdfIn PDF document text
    • https://penulikadima.weebly.com/uploads/1/3/1/4/131482887/gejugofofo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382190/normal_5f8da75f08d1a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404984/normal_5f91ea337e27b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366024/normal_5f8d5cc8cd00c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369905/normal_5f93a3f988185.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406793/normal_5f94771736591.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372737/normal_5f91d85aab85a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365624/normal_5f8a1265c858b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369665/normal_5f8e7fef20c34.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000d0e4.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000d0e4.bin)
    • https://cdn.shopify.com/s/files/1/0268/7582/2278/files/emulateur_ps2_android_gratuit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3865/3086/files/inequality_word_problems_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/0408/4380/files/rc_jeep_wrangler_for_sale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9010871a-1f81-4767-8609-45375708118a/muluwirorolumenuvela.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2764479-4866-449f-8b01-991a58311fae/nag_hammadi_library_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/879f0040-3d9c-4b6a-a74d-4f6f308d726c/femuwedajolibir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c8250ef-4b59-4751-979b-1cf737e34cab/wixuku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/7800/3109/files/christopher_dunn_giza_power_plant.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/2263/1067/files/accountability_process_definition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/1708/3286/files/42991156229.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5247/3243/files/bafurarewufelumirete.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0364/0990/files/28531223893.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_off0000d0e4.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d0e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0E4 5780 bytes
SHA-256: e57c903f0df581497d887d6450387d88fe62d850134b047296bea8aaf6817c0e
font_01_sfnt_off0000e47f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE47F 15708 bytes
SHA-256: ffb2ee26a70bad6e6c342c0b496ce472debf1fe185871d924db8a34cf2dccf8f