Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ffd4c0349e66f2d…

MALICIOUS

PDF

65.3 KB Created: 2020-08-14 09:45:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 069ca80f1e4b69e474226e414aef88a4 SHA-1: de22195af43845c25216c043c106b213439c49b9 SHA-256: 2ffd4c0349e66f2d362db36118e42cd6f4d516c33fc2c40a9ee744126b230ad3
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links hosted on 'cdn.shopify.com' and other domains, suggesting an attempt to broaden reach or obscure the final destination. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains the malicious URL, reinforcing the attack pattern.

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/pify?keyword=install+apk+in+android+studio+emulator
    • http://files.teslphe.org/uploads/1/3/0/7/130740011/7428055.pdf
    • http://files.nrmg.ca/uploads/1/3/1/4/131406442/5515111.pdf
    • http://files.txtsantacruz.com/uploads/1/3/1/3/131380616/deguwutazow.pdf
    • https://cdn.shopify.com/s/files/1/0437/6382/6849/files/reputefixixiwemebodiniv.pdf
    • https://cdn.shopify.com/s/files/1/0428/0002/1667/files/77873477556.pdf
    • https://cdn.shopify.com/s/files/1/0432/9200/0406/files/bagirariwufuga.pdf
    • https://cdn.shopify.com/s/files/1/0440/1269/9798/files/76899804088.pdf
    • https://cdn.shopify.com/s/files/1/0428/7604/3423/files/gowetufiman.pdf
    • https://cdn.shopify.com/s/files/1/0434/4987/6630/files/6874167487.pdf
    • https://cdn.shopify.com/s/files/1/0432/4923/8184/files/mujogiwatujuxexezixomokoj.pdf
    • https://cdn.shopify.com/s/files/1/0428/9606/4671/files/tuwanibolibowojulamozor.pdf
    • https://cdn.shopify.com/s/files/1/0433/5969/9109/files/xuramemetizabakuru.pdf
    • https://cdn.shopify.com/s/files/1/0445/3348/1636/files/macroeconomia_blanchard_download_portugues.pdf
    • https://cdn.shopify.com/s/files/1/0431/5647/1959/files/gevefadetumemaxuzuwipol.pdf
    • https://cdn.shopify.com/s/files/1/0434/6845/6086/files/9588257138.pdf
    • https://cdn.shopify.com/s/files/1/0434/9142/6469/files/10th_new_maths_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/2314/6906/files/mojikifavolefibomutiri.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_off0000acc8.bin
4aa76c056803245f48450e6de5ed57bca017cd62c9f9464a9bb21028375700f7
pdf-font-stream PDF embedded font (sfnt) at offset 0xACC8 5108 bytes
font_01_sfnt_off0000be02.bin
6022192afa6227da1e333d568f5c93a6e3024b9982571d17ba4c77979677d468
pdf-font-stream PDF embedded font (sfnt) at offset 0xBE02 10476 bytes
font_02_sfnt_off0000e1dc.bin
de4d8b2f57bd79f1a868fabda613d9936b110e31710edd4728466090b424b6ff
pdf-font-stream PDF embedded font (sfnt) at offset 0xE1DC 16340 bytes