Malicious PDF — malware analysis report

Static analysis result for SHA-256 153b8ae73e3f9e85…

MALICIOUS

PDF

47.0 KB Created: 2020-08-31 12:52:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: baa47d3c84b2ae616f019271447ca6d3 SHA-1: b9e5476dd18eab4add2480945b32b44767c41112 SHA-256: 153b8ae73e3f9e857b699356049bd8a120bd5aba8248eda616309c942764d610
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links that redirect to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text related to 'Tesla generator blueprints' and a URL that aligns with the heuristic findings. The PDF_SEO_LINK_FARM heuristic suggests a large number of links were generated, likely to obscure the malicious intent and distribute the malicious content across multiple domains.

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.cc/wix?keyword=tesla+generator+blueprints
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/93971e_f9f2a466dbde4767a52e6c3d2bc484f7.pdf
    • https://static.usrfiles.com/ugd/1cfe37_b295eff6add14e7e979d8db9dbacc285.pdf
    • https://static.usrfiles.com/ugd/b8c837_895bc1339dad4deebd748217b346c316.pdf
    • https://cdn.shopify.com/s/files/1/0432/8659/3694/files/1187355782.pdf
    • https://cdn.shopify.com/s/files/1/0437/0799/0169/files/sulagufudolologulade.pdf
    • https://cdn.shopify.com/s/files/1/0436/8721/5269/files/dynamic_bone_settings.pdf
    • https://static.usrfiles.com/ugd/191a6d_f9c31245916d4f1fa8e472b7c49e5ae1.pdf
    • https://static.usrfiles.com/ugd/b8c837_e334b50ff0814d4296a42551ef71dad4.pdf
    • https://static.usrfiles.com/ugd/b8c837_742f67efcec24757a8a14ef10945a063.pdf
    • https://cdn.shopify.com/s/files/1/0437/0586/0248/files/data_aws_iam_role_terraform.pdf
    • https://cdn.shopify.com/s/files/1/0432/4560/0936/files/31880266538.pdf
    • https://cdn.shopify.com/s/files/1/0431/4667/4336/files/23342005412.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_off000061e4.bin
6d291ccf12bc0e6c25ecb2664f0edd1ae0e1015ed0b63a53ad2ea84d090c223f
pdf-font-stream PDF embedded font (sfnt) at offset 0x61E4 5076 bytes
font_01_sfnt_off0000732c.bin
a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
pdf-font-stream PDF embedded font (sfnt) at offset 0x732C 1800 bytes
font_02_sfnt_off00007bb9.bin
3c9515b7593186dd2d768e5e47b53466f9f974d1572dbfbbad1c4120c75d8628
pdf-font-stream PDF embedded font (sfnt) at offset 0x7BB9 16028 bytes