Malicious PDF — malware analysis report

Static analysis result for SHA-256 83e1f17db17d73d6…

MALICIOUS

PDF

47.7 KB Created: 2020-09-01 15:50:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 013a6240e096f1129c492c802d57d200 SHA-1: 7631d5435d09e0f9e3d4c379c3335463fce885b8 SHA-256: 83e1f17db17d73d67ae95a3f720561fc6daa1e602541de1570bc7707fb950a4e
150 Risk Score

Malware Insights

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

The PDF file contains a malicious redirector link disguised as a document about 'Warlock invocations 5e'. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms this, and the ML_NYX_PDF_MALICIOUS score indicates a high probability of malicious intent. The document body, though heavily obfuscated, contains the primary malicious URL and several benign-looking URLs, likely part of a link farm to obscure the malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.club/wix?keyword=warlock+invocations+5e+pdf
    • https://static.usrfiles.com/ugd/c0b427_c96a7a31440f4954befb8b294a09c3f1.pdf
    • https://static.usrfiles.com/ugd/b8c837_e303e836fcfc4286a25534a1be6a9e77.pdf
    • https://static.usrfiles.com/ugd/b8c837_07761a20b169468d989b6dfce4f0a24c.pdf
    • https://static.usrfiles.com/ugd/d1c05f_affbd3475d84449fb9c60d842e64e7dd.pdf
    • https://static.usrfiles.com/ugd/b8c837_8c4eed335fd642a4af7c3d861c14881c.pdf
    • https://static.usrfiles.com/ugd/6f58fb_8d2c81edfaa34eeea3e4597a06f6c497.pdf
    • https://static.usrfiles.com/ugd/455f95_42e6ac4c7cf84a38a337e1cdd6c533b1.pdf
    • https://static.usrfiles.com/ugd/625844_b4891a0c0a28429bae230625d483bef0.pdf
    • https://static.usrfiles.com/ugd/e5412a_a36b8d4601fe43558b2a1b13835db2bb.pdf
    • https://static.usrfiles.com/ugd/6908d7_7ce3d87200f64dd78ba5ccae7cd6c82a.pdf
    • https://cdn.shopify.com/s/files/1/0430/1537/2949/files/dejazefarutavotaxuvijud.pdf
    • https://cdn.shopify.com/s/files/1/0438/7130/5896/files/biomaterials_science_third_edition.pdf
    • https://cdn.shopify.com/s/files/1/0438/3100/1250/files/betty_crocker_recipes.pdf
    • https://cdn.shopify.com/s/files/1/0430/7868/0727/files/alien_abduction_incident_in_lake_county.pdf
    • https://cdn.shopify.com/s/files/1/0435/8042/4351/files/difezidefanurupix.pdf
    • https://cdn.shopify.com/s/files/1/0430/3421/4561/files/32479761891.pdf
    • https://cdn.shopify.com/s/files/1/0440/9645/4808/files/rujumosaxowobe.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000704f.bin
8c76744dea149bd8d31ef1a1fe357a27f795af505db490407de85dd46b585775
pdf-font-stream PDF embedded font (sfnt) at offset 0x704F 5196 bytes
font_01_sfnt_off00008216.bin
8ecfc7c29451bad7d5249423c9ba51010efa1e847c089ac2d6aa9f3304923a5f
pdf-font-stream PDF embedded font (sfnt) at offset 0x8216 9876 bytes
font_02_sfnt_off0000a3f0.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0xA3F0 4324 bytes