Malicious PDF — malware analysis report

Static analysis result for SHA-256 097aa909e7a20e70…

MALICIOUS

PDF

45.0 KB Created: 2020-08-05 04:03:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b3b39dd50ed4d9e91c70dc02dd29affe SHA-1: 81eee5621e990618eedd41dee7ab10b297dced0e SHA-256: 097aa909e7a20e705a6a75e03b5e9ae87fd91f0ae20239d036e87ce8211a7867
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=blockchain+revolution+don+tapscott+pdf', suggesting a lure to a malicious site. The presence of numerous external PDF links further indicates a link farm designed to distribute malicious content or engage in SEO manipulation for malicious purposes.

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/pify?keyword=blockchain+revolution+don+tapscott+pdf
    • http://files.jordanbeeks.com/uploads/1/3/1/4/131438604/vafuwoxenota-ribiraxaporuzur-jusatafesipewa-zomegis.pdf
    • http://files.altadenalive.com/uploads/1/3/1/1/131163976/52b92813bfd2fd5.pdf
    • http://files.3rdpointproductions.com/uploads/1/3/0/7/130739987/relikewigeda-visos-revafitosur-paxole.pdf
    • http://beked.calzadoleonsr.net/uploads/1/3/0/8/130813108/947c55a.pdf
    • http://files.smokedearthceramics.com/uploads/1/3/1/3/131398367/jezedixar.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/6092/8405/files/79814104937.pdf
    • https://cdn.shopify.com/s/files/1/0434/8474/1798/files/bupunefewovimaz.pdf
    • https://cdn.shopify.com/s/files/1/0430/0141/3785/files/large_treble_clef_staff_paper.pdf
    • https://cdn.shopify.com/s/files/1/0431/7986/8320/files/noteburokemitejes.pdf
    • https://cdn.shopify.com/s/files/1/0431/5434/2042/files/azhakiya_tamil_mahan.pdf
    • https://cdn.shopify.com/s/files/1/0437/6159/8616/files/super_mario_64_star_road.pdf
    • https://cdn.shopify.com/s/files/1/0432/2190/9662/files/nobesuwezorugiforerudi.pdf
    • https://cdn.shopify.com/s/files/1/0430/0803/2922/files/97070308730.pdf
    • https://cdn.shopify.com/s/files/1/0435/7767/1843/files/gizosatuzitosabal.pdf
    • https://cdn.shopify.com/s/files/1/0428/8679/1334/files/35680410444.pdf
    • https://cdn.shopify.com/s/files/1/0430/0167/5939/files/kegarorojexatipesag.pdf
    • https://cdn.shopify.com/s/files/1/0431/0011/0999/files/23870855080.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007103.bin
5a56aed3af8d16ef5a231378c07fb7df27ba555abfb39c11479139a897749076		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7103 5416 bytes
font_01_sfnt_off00008373.bin
269ad7eb1c93d84d067a4fcaab2691a3d7c13e3be17d903a406df1701ff26ea4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8373 10428 bytes

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