Malicious PDF — malware analysis report

Static analysis result for SHA-256 a79f49989a6850a7…

MALICIOUS

PDF

44.3 KB Created: 2020-08-28 10:22:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 581e54338f8a3775350d42cbbc352383 SHA-1: 19ec1e8e75d9b342ac526af7aa5438793fb66971 SHA-256: a79f49989a6850a789afb77ce59f4d09a5b5ca7445224b7cd83c280f30cd8ef9
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely used to obscure the final malicious destination. The document body, though heavily obfuscated, contains the same title as the malicious redirector URL, suggesting a lure. The presence of a link farm indicates an attempt to distribute malicious content or phishing pages.

Heuristics 3

  • 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.
  • 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=dil+hai+tumhara+movie+mp3+song+webmu
    • http://bawes.lakesidepre-school.com/uploads/1/3/1/4/131483334/dunamopizovofis.pdf
    • http://files.christianfellowshipgoldriver.com/uploads/1/3/2/7/132740361/mawiwilamolob_wuwulowolelumen.pdf
    • http://deteninip.drylandag.org/uploads/1/3/2/6/132696067/fdba5b643ff.pdf
    • http://files.chapelbythelake.net/uploads/1/3/2/6/132695493/feliju.pdf
    • https://cdn.shopify.com/s/files/1/0435/6092/7393/files/spongiform_encephalopathy_define.pdf
    • https://cdn.shopify.com/s/files/1/0432/6014/9910/files/marketing_plan_calendar_excel_template.pdf
    • https://cdn.shopify.com/s/files/1/0434/0118/3384/files/30393783269.pdf
    • https://cdn.shopify.com/s/files/1/0433/8784/6806/files/dizuj.pdf
    • https://cdn.shopify.com/s/files/1/0435/9038/5821/files/71001521353.pdf
    • https://cdn.shopify.com/s/files/1/0440/6332/6358/files/maytag_4000_series_washer_manual.pdf
    • https://cdn.shopify.com/s/files/1/0448/5870/4034/files/aradhana_movie_utorrent.pdf
    • https://cdn.shopify.com/s/files/1/0436/2538/2051/files/best_android_spelling_test_app.pdf
    • https://cdn.shopify.com/s/files/1/0434/2392/4376/files/bodubenub.pdf
    • https://cdn.shopify.com/s/files/1/0430/2041/9226/files/atos_administrativos_para_concursos.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_off00006ed3.bin
c491defd57f136453a8cc7380234e1ddba291a46163a801b571ca7d670f78dc7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6ED3 5688 bytes
font_01_sfnt_off00008222.bin
ada45d84561f1f6c8cb106c1318571cd75ee2f3569055a048e1f9dc1f04dc48a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8222 10028 bytes

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