Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c4024ff20b37be2…

MALICIOUS

PDF

39.4 KB Created: 2020-08-17 01:39:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 57359a168c7109066d5c8aed729f16ba SHA-1: 03249393b8c58e337ea036c57e5258c357d4377b SHA-256: 1c4024ff20b37be23727aefdfe03d548d37cac257f8e7fbd5e4672f7e32bb91a
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous links, with a critical heuristic firing indicating it links to known malicious redirector infrastructure via the URL https://ttraff.com/pify?keyword=medio+isotonico+pdf. Another critical heuristic identified a PDF link farm, with the primary link pointing to a Shopify domain. The document body, though heavily obfuscated, contains references to the malicious URL and other benign-looking PDF links, suggesting a lure to external content.

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.com/pify?keyword=medio+isotonico+pdf
    • http://zivesi.mountaintopartshop.com/uploads/1/3/1/0/131070161/vekapuze_tuperotojoduz_febijotexinebe_bobusuvipunan.pdf
    • http://files.womenandmeth.com/uploads/1/3/0/7/130775592/govote.pdf
    • https://cdn.shopify.com/s/files/1/0431/8714/2818/files/nogudama.pdf
    • https://cdn.shopify.com/s/files/1/0433/1234/9334/files/sindrome_de_abstinencia_a_las_drogas.pdf
    • https://cdn.shopify.com/s/files/1/0437/8879/6053/files/89827529827.pdf
    • https://cdn.shopify.com/s/files/1/0434/3742/4807/files/fijosoxipisesopekudav.pdf
    • https://cdn.shopify.com/s/files/1/0432/3685/1874/files/jugixuzejuvewiraduwekama.pdf
    • https://cdn.shopify.com/s/files/1/0431/5840/5275/files/6175121332.pdf
    • https://cdn.shopify.com/s/files/1/0432/8049/8852/files/nipolofeg.pdf
    • https://cdn.shopify.com/s/files/1/0434/5469/3541/files/apollo_munich_optima_restore_claim_form.pdf
    • https://cdn.shopify.com/s/files/1/0431/9726/8128/files/bible_character_study_outline.pdf
    • https://cdn.shopify.com/s/files/1/0431/0892/5600/files/badibibedolawe.pdf
    • https://cdn.shopify.com/s/files/1/0434/9001/7430/files/sexaxep.pdf
    • https://cdn.shopify.com/s/files/1/0430/4997/5959/files/suburozinawevoterudiwagum.pdf
    • https://cdn.shopify.com/s/files/1/0430/0832/7829/files/gotemavexakitefesaxuze.pdf
    • https://cdn.shopify.com/s/files/1/0435/9651/3448/files/bsc_third_year_maths_notes.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_off00005d41.bin
e9c25d9ef7fff93d794d4981c248f06862950ccf9cc19f9b2bd72f8d5244be6d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D41 4816 bytes
font_01_sfnt_off00006dc8.bin
3168919b64053e932744dcac439b589c740b01cd10f2c2c9ff6251df34756d60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DC8 10908 bytes

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