Malicious PDF — malware analysis report

Static analysis result for SHA-256 6abbdba10ae0b986…

MALICIOUS

PDF

40.1 KB Created: 2020-08-22 17:58:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3a84793dd012ee84fa36e2416cea1ac9 SHA-1: 648dc864d9661bfaee04807f6afe89e7bfbadffc SHA-256: 6abbdba10ae0b986073fedca7347eb2680fa274ad88745af128fce36ea292c45
154 Risk Score

Malware Insights

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

The PDF document contains a deceptive title and numerous embedded links, including one identified as a malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates that the link 'https://ttraff.ru/pify?keyword=reporting+threatening+emails+to+police' leads to malicious infrastructure. The presence of a large number of external PDF links suggests a link farm or SEO manipulation tactic. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing or redirection attempt.

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.ru/pify?keyword=reporting+threatening+emails+to+police
    • http://files.weekendwoodworks.com/uploads/1/3/1/8/131856725/jefuda-nunapur.pdf
    • http://files.theartofalainponcelet.com/uploads/1/3/1/4/131482997/muwejupuvi.pdf
    • http://takebag.jgmckenney.com/uploads/1/3/1/3/131398020/zebilijur_nadofigob_xasunug_fevixanexiv.pdf
    • http://fawivizuf.sdadata.org/uploads/1/3/2/6/132682347/mavebexinised.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/6451/7023/files/72942924770.pdf
    • https://cdn.shopify.com/s/files/1/0437/7670/4669/files/aahat_video_mp4.pdf
    • https://cdn.shopify.com/s/files/1/0434/4987/6630/files/99750700135.pdf
    • https://cdn.shopify.com/s/files/1/0434/2897/0647/files/xaxetorik.pdf
    • https://cdn.shopify.com/s/files/1/0434/3670/3900/files/buvubawapalef.pdf
    • https://cdn.shopify.com/s/files/1/0428/2315/5878/files/56981010978.pdf
    • https://cdn.shopify.com/s/files/1/0434/0318/2231/files/best_n64_emulator_android.pdf
    • https://cdn.shopify.com/s/files/1/0440/7967/7590/files/jovaboduxovi.pdf
    • https://cdn.shopify.com/s/files/1/0428/0818/0895/files/authorize._net_credit_card_numbers_for_testing.pdf
    • https://cdn.shopify.com/s/files/1/0430/2694/0067/files/64231660182.pdf
    • https://cdn.shopify.com/s/files/1/0429/3653/3151/files/descargar_programa_para_cambiar_de_a_word.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_off00005fca.bin
5f4fb220828c61b7dfdb72d0db14b26c9c9b88b7d51b69654c6f6a05ae7e6f4d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FCA 5352 bytes
font_01_sfnt_off000071d3.bin
a000cc7e2528f31626fd51cb38cb2c00b1b313699a62c024296c4dcdf65626b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71D3 9884 bytes

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