Malicious PDF — malware analysis report

Static analysis result for SHA-256 92a940ccac8fd218…

MALICIOUS

PDF

50.8 KB Created: 2020-08-10 00:05:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0cabeeeef790d3d26ca6c35197d05215 SHA-1: 4069b08330ddd814d2ad0d9ca01df8e1451b3be1 SHA-256: 92a940ccac8fd2181cf21741ebce6a6d26b45c760f29b704d0115b78254c3602
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a malicious redirector link disguised as an Apple marketing strategy document. The primary malicious URL, 'https://ttraff.cc/pify?keyword=apple+marketing+strategy+pdf', is designed to redirect users to further malicious content. The document also features a large number of external PDF links, many hosted on Shopify, which is indicative of a link farm used for SEO manipulation or to obscure the true destination.

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=apple+marketing+strategy+pdf
    • http://files.katzkupcakes.com/uploads/1/3/1/4/131408353/komozegenipesexojus.pdf
    • http://jifuluxu.ayorbyrobertosilva.com/uploads/1/3/1/3/131384635/jogekonav.pdf
    • http://files.mgracetransitions.com/uploads/1/3/2/6/132682171/dobeni_wonodeneku_miluj_jozotum.pdf
    • http://files.singleinsantiago.com/uploads/1/3/1/4/131406435/vimogoxok.pdf
    • https://cdn.shopify.com/s/files/1/0432/7030/7995/files/67485075569.pdf
    • https://cdn.shopify.com/s/files/1/0433/6818/6024/files/anatomie_descriptive_de_l_estomac.pdf
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/jewogulonexipixakiwes.pdf
    • https://cdn.shopify.com/s/files/1/0432/2004/1886/files/9910115914.pdf
    • https://cdn.shopify.com/s/files/1/0432/9550/6592/files/22717545610.pdf
    • https://cdn.shopify.com/s/files/1/0430/6622/8898/files/95527549153.pdf
    • https://cdn.shopify.com/s/files/1/0430/7792/7072/files/vubawutivawebofolitafif.pdf
    • https://cdn.shopify.com/s/files/1/0429/1290/7427/files/70519000397.pdf
    • https://cdn.shopify.com/s/files/1/0430/4614/2114/files/bedingte_wahrscheinlichkeit_aufgaben_vierfeldertafel.pdf
    • https://cdn.shopify.com/s/files/1/0434/0465/6797/files/piguxebalidi.pdf
    • https://cdn.shopify.com/s/files/1/0432/9842/2934/files/acute_myeloid_leukemia_2020.pdf
    • https://cdn.shopify.com/s/files/1/0434/5279/2982/files/lebadojulegebugolabenol.pdf
    • https://cdn.shopify.com/s/files/1/0434/1281/6039/files/bibukav.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000088f0.bin
d1c9502778ca8ee2d3cb8685d63b4ac24abd272f7274906a6a47a43341e7de06		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88F0 5516 bytes
font_01_sfnt_off00009ba7.bin
0bfb939a3e95892ba4d9f269e80c240b9ae6565ecc4fca905a266cfd29cc6d61		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9BA7 10272 bytes

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