Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fa755d020eb6c22…

MALICIOUS

PDF

48.8 KB Created: 2020-07-28 23:24:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 06c662d92adac1f666a79ef840746f8b SHA-1: 43b4093714f67e8a6fad4dbac1a07f464cc6f56a SHA-256: 6fa755d020eb6c22bd2900baf48a98501bcd6d3e3c0ed9260283008fa087b4fa
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many of which point to a link farm hosted on Shopify, and one critical link redirects to a known malicious domain (ttraff.com). This indicates a phishing or malicious redirection attempt. The ML classifier also 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.com/pify?keyword=sqlite+viewer+android
    • http://files.artfultim.com/uploads/1/3/1/4/131438002/kijerumofuzozasaluvu.pdf
    • http://files.violetconner.com/uploads/1/3/1/4/131453605/4198415.pdf
    • http://files.traumamadesimple.com/uploads/1/3/0/7/130740124/tawuboritano.pdf
    • http://files.the-hafizova-hive.com/uploads/1/3/0/7/130738955/zapurow.pdf
    • http://files.tonypalermolifecoach.com/uploads/1/3/1/4/131437740/eaf0f757.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/3358/2998/files/tozifepujowosez.pdf
    • https://cdn.shopify.com/s/files/1/0428/3629/5836/files/zetox.pdf
    • https://cdn.shopify.com/s/files/1/0432/2436/7262/files/loladexobo.pdf
    • https://cdn.shopify.com/s/files/1/0428/1358/7623/files/xuzezarekobara.pdf
    • https://cdn.shopify.com/s/files/1/0431/1416/8480/files/xanoxakuwisimiperi.pdf
    • https://cdn.shopify.com/s/files/1/0434/2795/4853/files/porig.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/17418425376.pdf
    • https://cdn.shopify.com/s/files/1/0431/6862/8892/files/23533627655.pdf
    • https://cdn.shopify.com/s/files/1/0433/8358/6974/files/naxoxas.pdf
    • https://cdn.shopify.com/s/files/1/0436/8711/6965/files/sufabogewewubekuvezir.pdf
    • https://cdn.shopify.com/s/files/1/0429/3135/5807/files/89753280973.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ef9.bin
e5f00fbffc1687fe3efde4e22e96c3855b2131dc39f4e38efcebdef7e3a6de3e
pdf-font-stream PDF embedded font (sfnt) at offset 0x6EF9 4808 bytes
font_01_sfnt_off00007f58.bin
2d1c02d7faeb7dad5af5d103f135926a0d4fd4e69f3a7da8959d46cf8e88466d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F58 3120 bytes
font_02_sfnt_off00008bdb.bin
b4b0469b3709027332279b20188038ec71168cd0e7f807addde1153efe46e965
pdf-font-stream PDF embedded font (sfnt) at offset 0x8BDB 12988 bytes