Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f8ba9a13a70dc9b…

MALICIOUS

PDF

42.3 KB Created: 2020-10-28 21:55:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 0edd836cc30b468fd0ef2f51ac8b35a0 SHA-1: 2c46aa781ee2f4299e1f9fa57108c3c576c3e064 SHA-256: 5f8ba9a13a70dc9bdede22ad301557730e79699dd01395ea461fcf676daeabc5
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains a large number of embedded links, many of which point to potentially malicious redirectors or link farms. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' specifically flags the URL 'https://ttraff.cc/123?keyword=the+definitive+guide+to+dax' as malicious. The 'PDF_SEO_LINK_FARM' heuristic indicates the document is designed to host numerous external links, likely for SEO manipulation or to distribute further malicious content. No scripts were extracted, but the presence of numerous links suggests a phishing or content-distribution attack vector.

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.
  • 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.
  • 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/123?keyword=the+definitive+guide+to+dax In PDF document text
    • https://lakizixobatit.weebly.com/uploads/1/3/4/3/134325667/wujigokuxetukek.pdfIn PDF document text
    • https://xuxewisi.weebly.com/uploads/1/3/4/2/134235501/c76435150a7.pdfIn PDF document text
    • https://nikokabiliru.weebly.com/uploads/1/3/1/4/131409463/495735c5c.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/wirexanusir.pdfIn PDF document text
    • https://vovezakiw.weebly.com/uploads/1/3/4/5/134523709/tefeluro.pdfIn PDF document text
    • https://babikovinemixe.weebly.com/uploads/1/3/1/8/131856339/9690403.pdfIn PDF document text
    • https://mosodujisar.weebly.com/uploads/1/3/0/7/130739504/wusurudefixareteta.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/1/0496/7255/2601/files/corteco_oil_seal_catalogue.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9087/9667/files/followers_for_instagram_apk_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/2208/5027/files/72974380417.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/4094/8383/files/86495142906.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/beechcraft_1900d_flight_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6970/2305/files/strike_force_kitty_last_stand_cool_math_games.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0787/7017/files/zupipaminolufifinuwoneni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/7940/4194/files/godixorifikamigibaminujod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0515/5227/files/manual_transmission_hybrid_cars_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/1717/2640/files/wedding_photography_checklist_for_photographers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/7961/2612/files/pune_map_road.pdfIn PDF document text
    • https://s3.amazonaws.com/pisik/murder_in_the_dark_card_game.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/1167/8623/files/57562253603.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_off000067c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67C9 4940 bytes
SHA-256: 88a58d6353cd80e9584ed966373733885862a04d59fba5b3d326850af07b32c8
font_01_sfnt_off000078a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78A7 10392 bytes
SHA-256: 28a579b780dcb4f975d08d4fd8e65ff24da52fe3eeb933dd519c259644f468b6

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