Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9e14670e1e3d9eb…

MALICIOUS

PDF

39.5 KB Created: 2020-08-29 11:30:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 01b8215f6391c15915ff00cc70f8b4fd SHA-1: 50d8b7dbfa91b09c5a5c69fae95976a0311bd2fa SHA-256: f9e14670e1e3d9eb0ee3286ae7c89d5dc6b77e559bf6b0b540eb9eb499ba3b22
150 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with 24 identified as part of a link farm. One of these links, https://ttraff.com/wix?keyword=sa%25C3%25A7lar%25C4%25B1ma+y%25C4%25B1ld%25C4%25B1z+d%25C3%25BC%25C5%259Fm%25C3%25BC%25C5%259F+koparma+anne+indir, is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. The presence of numerous Shopify-hosted PDF links indicates an attempt to obscure the final 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.com/wix?keyword=sa%25C3%25A7lar%25C4%25B1ma+y%25C4%25B1ld%25C4%25B1z+d%25C3%25BC%25C5%259Fm%25C3%25BC%25C5%259F+koparma+anne+indir
    • https://cdn.shopify.com/s/files/1/0432/7302/7749/files/walmart_breath_of_the_wild.pdf
    • https://cdn.shopify.com/s/files/1/0429/2175/4787/files/taxixuxedoguravokego.pdf
    • https://cdn.shopify.com/s/files/1/0435/5417/7183/files/zoninediwofaf.pdf
    • https://cdn.shopify.com/s/files/1/0430/5197/4818/files/bivuvevasulosaditi.pdf
    • https://cdn.shopify.com/s/files/1/0432/4022/6984/files/batman_vs_superman_telugu_hd_movie.pdf
    • https://cdn.shopify.com/s/files/1/0431/2642/3701/files/fairy_tail_episode_173_what_lucy_said_to_natsu.pdf
    • https://cdn.shopify.com/s/files/1/0435/9297/4499/files/1074293686.pdf
    • https://cdn.shopify.com/s/files/1/0437/1916/4058/files/53513305442.pdf
    • https://cdn.shopify.com/s/files/1/0457/6136/4124/files/jabejetixejamita.pdf
    • https://static.usrfiles.com/ugd/b8c837_9431dcffb636424b802f7aac8940d8e2.pdf
    • https://static.usrfiles.com/ugd/b8c837_c23f1188a5154b8980cb8176da2cb52b.pdf
    • https://static.usrfiles.com/ugd/b8c837_b88f6bb11769459da3e4ecc773490466.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_off00005867.bin
e9d96ddb144f44193c6e8e06e80c7969087b52d63ca10f07cd785804574ec96d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5867 5828 bytes
font_01_sfnt_off00006bc7.bin
cc0b37c78a6b66c2ffc08e9672226256dc3a3c31e488225ae9b5b0c2541754a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BC7 11332 bytes

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