Malicious PDF — malware analysis report

Static analysis result for SHA-256 92780f1957500174…

MALICIOUS

PDF

41.2 KB Created: 2020-09-01 04:23:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 219f777bc14491fe049d57b2470f8aa1 SHA-1: 3c159d5ee7b79eaf1e8ce52543466b94aab9da2e SHA-256: 92780f1957500174ab1e04931bfd8572d2e4ee4916c2b2faf1cf5ed943e45dab
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The document body, though partially corrupted, contains text related to financial performance and a URL pointing to a redirector. This suggests a phishing attempt designed to lead users to malicious content.

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.me/wix?keyword=best+performing+managed+funds+australia+2017
    • https://cdn.shopify.com/s/files/1/0436/8446/2745/files/are_performance_bonuses_taxable_uk.pdf
    • https://cdn.shopify.com/s/files/1/0459/9195/2546/files/12538878142.pdf
    • https://cdn.shopify.com/s/files/1/0434/8005/5958/files/webodir.pdf
    • https://cdn.shopify.com/s/files/1/0429/1906/7815/files/fijegowurivib.pdf
    • https://static.usrfiles.com/ugd/ac72e0_ed488bfcd000436da762a7be6f957e84.pdf
    • https://static.usrfiles.com/ugd/90c678_97d902c22bb14930a82511b18c36dc17.pdf
    • https://static.usrfiles.com/ugd/26481d_d44e878b4ca749c6a6b1301f06ecb644.pdf
    • https://static.usrfiles.com/ugd/de3d83_ec064c88d8ae4e529dc95444245d7377.pdf
    • https://static.usrfiles.com/ugd/234f58_a352e78234404e79b88befc47e551475.pdf
    • https://cdn.shopify.com/s/files/1/0435/7586/9599/files/cbse_class_10_result_2020_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/3057/6285/files/41021215996.pdf
    • https://cdn.shopify.com/s/files/1/0437/2883/0632/files/antennas_and_wave_propagation_by_kd_prasad.pdf
    • https://cdn.shopify.com/s/files/1/0437/3371/3050/files/bifrost_maya_2014_plugin.pdf
    • https://cdn.shopify.com/s/files/1/0432/7142/2102/files/binirirobarum.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_off00005f61.bin
e9295fead2af980185f92847e08b4499e4b1ea1f0fcfbaeb3cc9f31cf90659d0
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F61 5816 bytes
font_01_sfnt_off00007327.bin
0ad78d864bf619c6e190db163698f639371049f026ed2dd1e73c591a2a2b817e
pdf-font-stream PDF embedded font (sfnt) at offset 0x7327 10820 bytes