Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1694558b21fcbe6…

MALICIOUS

PDF

34.3 KB Created: 2020-08-23 10:28:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ccc041c67b82118654c7fe6b62faaf68 SHA-1: 8918ed86fb9d9cdd1b7e8062ebf86808f33e172a SHA-256: e1694558b21fcbe67aca3eda7e5df1fe1d43ec8b4878c484d4b0679d5206f0e4
152 Risk Score

Malware Insights

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

The PDF contains a prominent link to 'ttraff.cc', identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to sheet music and the malicious URL, suggesting a lure to trick users into clicking the link. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm strategy to obscure the malicious destination. The ML classifier strongly flagged this PDF as malicious.

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.cc/pify?keyword=crockett%2527+s+theme+sheet+music+free
    • http://files.personcoeducationfoundation.org/uploads/1/3/1/4/131437418/32b25059a93.pdf
    • https://cdn.shopify.com/s/files/1/0432/6385/2708/files/carnot_engine_notes.pdf
    • https://cdn.shopify.com/s/files/1/0435/2727/4645/files/91316605383.pdf
    • https://cdn.shopify.com/s/files/1/0433/6710/4668/files/kasewix.pdf
    • https://cdn.shopify.com/s/files/1/0437/7952/2714/files/ratataselugutovew.pdf
    • https://cdn.shopify.com/s/files/1/0437/5969/8077/files/bomutagoboruk.pdf
    • https://cdn.shopify.com/s/files/1/0440/6430/9413/files/23635378417.pdf
    • https://cdn.shopify.com/s/files/1/0435/6443/3566/files/jazerekeliripezaka.pdf
    • https://cdn.shopify.com/s/files/1/0434/6052/6246/files/diablo_2no_cd.pdf
    • https://cdn.shopify.com/s/files/1/0427/8291/6767/files/blown_to_bits_chapter_6.pdf
    • https://cdn.shopify.com/s/files/1/0431/2429/3794/files/gta_5_usb_mod_ps3.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_off00004936.bin
3dc440223587b766fcbe1193b2c42d90fe81c2f8514d13e7f95d9181900362fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4936 4880 bytes
font_01_sfnt_off000059ab.bin
353a70d59c4161a47247c86638cf20bba72f7cd5b3df73c4e7db3904f03f250b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59AB 10312 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.