Malicious PDF — malware analysis report

Static analysis result for SHA-256 1035e6e4e3ad4368…

MALICIOUS

PDF

40.7 KB Created: 2020-09-03 08:16:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ba64ae485c8ab2ab204b1745c404666c SHA-1: 05b22077b053f3b2a66d421b9e07fb20da316883 SHA-256: 1035e6e4e3ad4368bb2ad094689738c1045640e85b6d700186b8f611e881b3f1
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains a mass of external links, with a critical heuristic firing indicating it leads to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. The primary purpose appears to be directing users to potentially harmful websites.

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.ru/wix?keyword=apple+tvos+beta
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b8c837_dac046756b5645e0902e25a83b11bb75.pdf
    • https://static.usrfiles.com/ugd/136d07_91641abe31f34b579a61df9677ca7f49.pdf
    • https://static.usrfiles.com/ugd/b8c837_1b0dcf6e002d4b3ea29d441e04dc2743.pdf
    • https://static.usrfiles.com/ugd/1a89c8_0d6baf4bc85e4a94924b7de498f682da.pdf
    • https://static.usrfiles.com/ugd/120f26_ffdfd713781144a5bfc2c6fde953f155.pdf
    • https://cdn.shopify.com/s/files/1/0430/0419/9075/files/3001752345.pdf
    • https://cdn.shopify.com/s/files/1/0435/2340/8023/files/75296167364.pdf
    • https://cdn.shopify.com/s/files/1/0429/6058/4870/files/vapagowujezusimur.pdf
    • https://cdn.shopify.com/s/files/1/0427/9664/6556/files/49835307515.pdf
    • https://cdn.shopify.com/s/files/1/0431/4680/5404/files/pepivemo.pdf
    • https://cdn.shopify.com/s/files/1/0430/2074/6906/files/dubijinevolalutokiser.pdf
    • https://cdn.shopify.com/s/files/1/0428/5097/5910/files/sebutevipe.pdf
    • https://cdn.shopify.com/s/files/1/0431/0522/2813/files/pejolesadogowiku.pdf
    • https://cdn.shopify.com/s/files/1/0434/0501/7255/files/haunted_house_hollywood_full_movie_download_in_hindi.pdf
    • https://cdn.shopify.com/s/files/1/0433/7431/3622/files/21812426100.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006265.bin
def429693bf4176023d328f5ab2ac31c62c098be14a382207344baabf10ba8a4
pdf-font-stream PDF embedded font (sfnt) at offset 0x6265 4908 bytes
font_01_sfnt_off00007327.bin
3c3f80cd7cdd4ad34fbc31234c3ed2459dc6a3e966d07014b8e741589fdcac4a
pdf-font-stream PDF embedded font (sfnt) at offset 0x7327 10192 bytes