Malicious PDF — malware analysis report

Static analysis result for SHA-256 ace38563d3248505…

MALICIOUS

PDF

44.3 KB Created: 2020-08-09 03:21:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a591ee4da9d67c2eb4b5fc2071f6e4d2 SHA-1: 621010b585ec97a2eed0d76bb436ba143d751127 SHA-256: ace38563d3248505ea73b604298089c73717f48085ae930ef78117f09d576e92
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link that points to ttraff.cc, a known malicious domain. The document body, though heavily obfuscated, contains the same malicious URL. This indicates the primary purpose is to redirect the user to malicious content. The PDF also contains a large number of links to other PDFs, likely for SEO manipulation to increase visibility.

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.cc/pify?keyword=bond+energy+calculation+pdf
    • http://files.sahasrashope.com.au/uploads/1/3/2/6/132681028/8734766.pdf
    • http://mubebarip.bluechillithai.co/uploads/1/3/1/4/131437462/1573667.pdf
    • http://files.charteredengineers.org/uploads/1/3/2/7/132712508/6ae92.pdf
    • http://files.elccauction.com/uploads/1/3/0/7/130740141/kepukuxo-kobipumefubuw.pdf
    • https://cdn.shopify.com/s/files/1/0436/8993/5003/files/cute_halloween_coloring_pages.pdf
    • https://cdn.shopify.com/s/files/1/0435/3097/7434/files/33160433701.pdf
    • https://cdn.shopify.com/s/files/1/0434/5213/7625/files/char_broil_big_easy_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/4663/2614/files/wiwufaruzakifesuramunili.pdf
    • https://cdn.shopify.com/s/files/1/0434/1451/9973/files/sora_anti_form.pdf
    • https://cdn.shopify.com/s/files/1/0434/4964/7270/files/89482686626.pdf
    • https://cdn.shopify.com/s/files/1/0436/0955/5107/files/64141771228.pdf
    • https://cdn.shopify.com/s/files/1/0440/6630/8246/files/std_12_ncert_biology_textbook_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/3967/7855/files/43894192036.pdf
    • https://cdn.shopify.com/s/files/1/0430/6137/9221/files/nokowatiwevivubopave.pdf
    • https://cdn.shopify.com/s/files/1/0433/0258/4480/files/tuxeruvaluvusaxis.pdf
    • https://cdn.shopify.com/s/files/1/0434/9244/2264/files/sidobuwupalikaxutikax.pdf
    • https://cdn.shopify.com/s/files/1/0432/8275/9836/files/gominadesoganufabagawi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nubizasijimowedemo.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/
    • https://cdn.shopify.com/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064bb.bin
7fb9bade5a1d435492fc786faa1e0514f92a0e857d333a26c8076e4e5d717560
pdf-font-stream PDF embedded font (sfnt) at offset 0x64BB 5296 bytes
font_01_sfnt_off000076d8.bin
a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
pdf-font-stream PDF embedded font (sfnt) at offset 0x76D8 1800 bytes
font_02_sfnt_off00007f65.bin
95fa6d5c7a63e0a58542989157b2c32a93d428ef56b04de59da4b8b42346e7c8
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F65 10712 bytes