Malicious PDF — malware analysis report

Static analysis result for SHA-256 f051efd724daf190…

MALICIOUS

PDF

46.4 KB Created: 2020-08-17 01:40:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f8841cce3b659f2ae35692cf41718646 SHA-1: 5cc948b899e7399c70a717d7953f4a8fd747d0ba SHA-256: f051efd724daf19027bc09868734fbc2830a8b929a2b26a78b94bf0403c575fa
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=fast+email+verifier'. Additionally, it exhibits a PDF link farm heuristic, with multiple links hosted on cdn.shopify.com, including 'https://cdn.shopify.com/s/files/1/0434/5122/0124/files/valanijutatuge.pdf'. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The 'SE_URGENCY_LURE' heuristic further supports the phishing or scam intent.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=fast+email+verifier
    • http://files.dorabramden.com/uploads/1/3/1/3/131382141/3729828.pdf
    • http://jumip.cherryartistics.com/uploads/1/3/2/6/132681647/japipas.pdf
    • http://files.visittvillems.org/uploads/1/3/1/3/131384771/bebomom.pdf
    • https://cdn.shopify.com/s/files/1/0434/5122/0124/files/valanijutatuge.pdf
    • https://cdn.shopify.com/s/files/1/0432/7761/5262/files/argentinien_karte.pdf
    • https://cdn.shopify.com/s/files/1/0436/3635/9326/files/dibewi.pdf
    • https://cdn.shopify.com/s/files/1/0431/0394/4858/files/6318983473.pdf
    • https://cdn.shopify.com/s/files/1/0432/5729/9097/files/automate_the_boring_stuff_with_python_programming.pdf
    • https://cdn.shopify.com/s/files/1/0433/8896/0924/files/rejitudasitaje.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/69696378660.pdf
    • https://cdn.shopify.com/s/files/1/0428/8613/5961/files/midaxedewutan.pdf
    • https://cdn.shopify.com/s/files/1/0435/1403/6376/files/catastrophism_and_uniformitarianism.pdf
    • https://cdn.shopify.com/s/files/1/0435/1534/7103/files/antropologia_visual.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_off000069c3.bin
6157194ba7c16ea5a5a94187ba133591eb0a7bd75e18dc9b3d94b31b098197ca
pdf-font-stream PDF embedded font (sfnt) at offset 0x69C3 3960 bytes
font_01_sfnt_off000077c4.bin
2b8a400ce6609c83b3c130665b8e9414177aaa8628b5a80183834c88f47806d1
pdf-font-stream PDF embedded font (sfnt) at offset 0x77C4 4928 bytes
font_02_sfnt_off00008878.bin
f2ad0b4f262a224539a8dc67cb8fe42fe2a61796b5b6de8b21fca5e1ae90af54
pdf-font-stream PDF embedded font (sfnt) at offset 0x8878 10512 bytes