Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a6dac13cf428e53…

MALICIOUS

PDF

42.9 KB Created: 2020-08-31 06:00:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 54415c98a8736cb5c5447c247d7b6595 SHA-1: ab57a2a57cc971372af6fec17268313f6ce6232e SHA-256: 1a6dac13cf428e53dc71d81d8c87d451ef24b3e88f83be537d44b9a30dc0a0ff
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, a technique often used to create link farms for SEO manipulation or to distribute malicious content. One of the primary links, 'https://ttraff.com/wix?keyword=calentamiento+deportivo+general+y+especifico', is flagged as a known malicious redirector. The document body, though heavily obfuscated, contains this URL and other PDF links, suggesting the intent is to lure users to malicious infrastructure under the guise of providing information.

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/wix?keyword=calentamiento+deportivo+general+y+especifico
    • https://static.usrfiles.com/ugd/538d67_b7bfc19a4edf4f7e8395a6207e0bcf0d.pdf
    • https://static.usrfiles.com/ugd/277b62_741c420e732d4d42b5505e2c24bc2620.pdf
    • https://static.usrfiles.com/ugd/7c3584_eeb02d15663e4b5e8f75998c3a051613.pdf
    • https://static.usrfiles.com/ugd/b8c837_af74fed0ea1745e2a445975ba74b165a.pdf
    • https://cdn.shopify.com/s/files/1/0435/5696/2467/files/lagu_cakra_khan_setelah_kau_tiada.pdf
    • https://cdn.shopify.com/s/files/1/0444/4097/7574/files/beckett_baseball_guide.pdf
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/89431772848.pdf
    • https://cdn.shopify.com/s/files/1/0432/7096/3350/files/birajojajadibafutawal.pdf
    • https://cdn.shopify.com/s/files/1/0432/6876/7907/files/wow_vanilla_blacksmithing_guide.pdf
    • https://cdn.shopify.com/s/files/1/0429/0081/6028/files/cadillac_mi_trail_report.pdf
    • https://cdn.shopify.com/s/files/1/0444/1587/7287/files/benim_hocam_tyt_matematik.pdf
    • https://cdn.shopify.com/s/files/1/0432/4173/4299/files/3973393103.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_off0000659f.bin
5d26baf6a462b3fe211eb37d939e98f3e789a62a14f8452fe924dec91a9f29e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x659F 5540 bytes
font_01_sfnt_off00007879.bin
6aa70673914bf9754eafbeeb5fbca24e625b8be689346b28397bd46c2f28b898		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7879 11452 bytes

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