Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d86b9c06837952a…

MALICIOUS

PDF

55.5 KB Created: 2020-08-06 12:40:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 73b1862ca61b897febee5258064e85e2 SHA-1: bd6b6510a5d8dc10e67a4015ec969f40aef315c1 SHA-256: 4d86b9c06837952a5cf57eac64d380cfbe39d450cf8c7e480956881456c2c258
120 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, specifically pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains the same URL and a related benign Shopify URL, suggesting a lure to entice users to click the malicious link. The PDF also contains a large number of external links, indicating a link farm strategy. No scripts were extracted from this sample.

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/wb?keyword=ultra%20wideband%20wireless%20communication%20pdf
    • http://files.rondix-flatcoated-retrievers.com/uploads/1/3/0/7/130738974/59d260.pdf
    • http://files.kjdesign.co.uk/uploads/1/3/1/4/131453870/7084ec367131ad6.pdf
    • http://files.portageyouthswimteam.com/uploads/1/3/0/7/130739379/foganu.pdf
    • http://files.bethinkcreate.com/uploads/1/3/2/7/132740218/70bd1ff781.pdf
    • http://files.sophiasoasisforequines.org/uploads/1/3/2/3/132302941/d372b7c2f28515.pdf
    • https://cdn.shopify.com/s/files/1/0441/2240/7064/files/mixutode.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/suramagufumaxuragozud.pdf
    • https://cdn.shopify.com/s/files/1/0429/6150/2374/files/sumizugesimofafabewutinij.pdf
    • https://cdn.shopify.com/s/files/1/0440/8508/4310/files/jitbit_macro_recorder.pdf
    • https://cdn.shopify.com/s/files/1/0427/4782/2236/files/sofojewedaneriv.pdf
    • https://cdn.shopify.com/s/files/1/0450/6674/8056/files/surah_ar_rahman_bangla_pronunciation.pdf
    • https://cdn.shopify.com/s/files/1/0427/4959/1718/files/48166390741.pdf
    • https://cdn.shopify.com/s/files/1/0429/7634/6266/files/senesimubewosutuduxapu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0340/3678/files/kemokojejizoguvalavo.pdf
    • https://cdn.shopify.com/s/files/1/0429/0550/1852/files/37353708055.pdf
    • https://cdn.shopify.com/s/files/1/0439/1036/5339/files/23418621557.pdf
    • https://cdn.shopify.com/s/files/1/0440/5100/5590/files/alan_turing_book.pdf
    • https://cdn.shopify.com/s/files/1/0429/6556/5589/files/guwemojitalemev.pdf
    • https://cdn.shopify.com/s/files/1/0428/7230/7875/files/mysql_workbench_user_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/8652/0224/files/91609064688.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_off00009922.bin
7109bc1e2db23443cf5856faa612a4b8e5fc1bb7c08751363321f6d5ba50926e
pdf-font-stream PDF embedded font (sfnt) at offset 0x9922 5524 bytes
font_01_sfnt_off0000abe0.bin
f76399d6004d42f70b7d53d8ec2f262e3fc556fabd0f80a6b9f5e9aaac9fb40e
pdf-font-stream PDF embedded font (sfnt) at offset 0xABE0 10652 bytes