Malicious PDF — malware analysis report

Static analysis result for SHA-256 16b3de1d0cd63194…

MALICIOUS

PDF

42.1 KB Created: 2020-09-02 08:51:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 30f810b10aa067e38d2c41fb2f14e651 SHA-1: 0471856be36b03d3773f568d29832248b91d62e8 SHA-256: 16b3de1d0cd63194f9f1bd23411966c340d8015d86b2691b5f29e0365bafb5bf
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains a link to a known malicious redirector, disguised with a lure related to 'ps3 emulator android gameplay'. The heuristic 'SE_BROWSER_INSTALL_LURE' indicates the document's intent is to trick the user into installing something, likely malware or a malicious browser extension. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is part of a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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=ps3+emulator+android+gameplay
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/913720_5fac2a6413f64e09af2366c2d4778a4f.pdf
    • https://static.usrfiles.com/ugd/50c35f_64f8d2430aae480d9f2b1ece2d8d5637.pdf
    • https://static.usrfiles.com/ugd/3e5d97_2ca35778803842bf90b99b6fada009b9.pdf
    • https://static.usrfiles.com/ugd/374ce0_cc92d9d815fa4642931b455fe1d9cf27.pdf
    • https://static.usrfiles.com/ugd/2f07a1_6013ced07c6c45c7bab4c7f8461ca3bb.pdf
    • https://cdn.shopify.com/s/files/1/0433/8463/5544/files/79250167334.pdf
    • https://cdn.shopify.com/s/files/1/0431/0184/7708/files/gixebiro.pdf
    • https://cdn.shopify.com/s/files/1/0428/2066/5510/files/applied_social_science_book.pdf
    • https://cdn.shopify.com/s/files/1/0427/5847/1846/files/rimepefa.pdf
    • https://cdn.shopify.com/s/files/1/0433/1126/7990/files/51858196733.pdf
    • https://static.usrfiles.com/ugd/7d1dc9_fbb71db1bb97495faab08b124cc42996.pdf
    • https://static.usrfiles.com/ugd/eb4c03_6a50e616b21d43c4b6bcfad52ca2f5c9.pdf
    • https://static.usrfiles.com/ugd/0ebc1f_b44d64a52e0641fc8bfc8b3b471feb2b.pdf
    • https://static.usrfiles.com/ugd/e3834b_a078f2dd34e747eab374bdb341f327b0.pdf
    • https://static.usrfiles.com/ugd/3794ad_011358a175e448e19f3ca5e95e733880.pdf
    • https://static.usrfiles.com/ugd/b8c837_406e5f5349dd4ea8af05a25f436413b7.pdf
    • https://static.usrfiles.com/ugd/96768c_85afcdcf84e6426eb54c18b5c8087499.pdf
    • https://static.usrfiles.com/ugd/b8c837_b89d6a7b0aeb4f74a62d7157d893c49a.pdf
    • https://static.usrfiles.com/ugd/b8c837_a70e80a52f3a4c23bb7641c38ced28af.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_off000065a8.bin
573635500faef0233d3cd3c054f61851df38ff6dba88dc55ea42a2000b2a7558		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65A8 5548 bytes
font_01_sfnt_off00007873.bin
accaeb1f1dda24f69f13545cd753233ab8aa2a5303f450c319afb9f1e0ba67f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7873 10148 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.