Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d6007dcfddf371b…

MALICIOUS

PDF

50.2 KB Created: 2020-08-09 04:51:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4158893686b289c0c42f72cb6ec6efd8 SHA-1: b68b18467bf3e94c66b5f9fc7d5b5cfe7aa1cc06 SHA-256: 4d6007dcfddf371b741ae76b9da0e411d99ff1e5ecd38a3f474b4deee740285f
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service. The primary malicious URL, 'https://ttraff.com/pify?keyword=ncert+biology+book+class+11+solutions+pdf', is designed to lure users by appearing to offer educational content. The PDF structure and the presence of numerous external links suggest a link farm or redirection attack designed to lead users to malicious sites.

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=ncert+biology+book+class+11+solutions+pdf
    • http://files.smtrackandcc.com/uploads/1/3/2/7/132740584/wopadabejotujixugi.pdf
    • http://files.sounbulamills.com/uploads/1/3/1/4/131453007/7319016.pdf
    • http://files.arkangelcreations.net/uploads/1/3/1/4/131437444/1805632.pdf
    • http://files.thesmallhinge.shop/uploads/1/3/0/8/130813409/nofenezifiluta_gejoj_mugokedofazedo.pdf
    • https://cdn.shopify.com/s/files/1/0435/6440/0798/files/vivalo.pdf
    • https://cdn.shopify.com/s/files/1/0433/9168/0666/files/fatebasawabakujo.pdf
    • https://cdn.shopify.com/s/files/1/0429/9925/1097/files/tweaks_for_ios_8._4.pdf
    • https://cdn.shopify.com/s/files/1/0431/0827/0244/files/dammit_guitar_tab.pdf
    • https://cdn.shopify.com/s/files/1/0434/3378/7542/files/coenzyme_structure_and_function.pdf
    • https://cdn.shopify.com/s/files/1/0431/8268/6370/files/tovaranipi.pdf
    • https://cdn.shopify.com/s/files/1/0429/1228/4831/files/69_chevy_c10.pdf
    • https://cdn.shopify.com/s/files/1/0427/8799/5814/files/mugisovofeduwituxo.pdf
    • https://cdn.shopify.com/s/files/1/0433/9728/3992/files/basic_c_programs_for_practice.pdf
    • https://cdn.shopify.com/s/files/1/0437/2171/9959/files/guguvabig.pdf
    • https://cdn.shopify.com/s/files/1/0431/7881/9735/files/66232737007.pdf
    • https://cdn.shopify.com/s/files/1/0430/6688/4250/files/absorcion_de_aminoacidos.pdf
    • https://cdn.shopify.com/s/files/1/0430/6275/5490/files/23584790547.pdf
    • https://cdn.shopify.com/s/files/1/0436/6021/4425/files/apostrophe_for_possession_exercises.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/s/files/1/0435/6440/0798/files/vivalo.pd

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000085e4.bin
fc1082452d62fe56814d75a1fbd69317de264ebab44a2e6f29fe6a789d893eaa
pdf-font-stream PDF embedded font (sfnt) at offset 0x85E4 5648 bytes
font_01_sfnt_off00009941.bin
dad2ae694e8ca56f0c8daf5cd85da61ef3b6ab6825aee868eea94a8249d1560e
pdf-font-stream PDF embedded font (sfnt) at offset 0x9941 10040 bytes