Malicious PDF — malware analysis report

Static analysis result for SHA-256 15bd9b7edf5120e4…

MALICIOUS

PDF

48.9 KB Created: 2020-08-08 06:40:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d94a4a8d9ce2efb007c5b5be82cc2fdd SHA-1: 3cb8d9582b2c7f6f82c17d189df44db83860abf8 SHA-256: 15bd9b7edf5120e4e86860a5543f4044c3378f1b7841a456f7abaad99ed3714f
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=bassoon+orchestral+excerpts+pdf', which is flagged as a malicious redirector. This suggests the document is designed to lead users to malicious sites, likely for phishing or malware distribution.

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/pify?keyword=bassoon+orchestral+excerpts+pdf
    • http://files.jltconstructionmt.com/uploads/1/3/1/3/131383771/lupawixupavoxolamij.pdf
    • http://files.goodtimesgv.com/uploads/1/3/1/1/131164386/ziwav.pdf
    • http://files.clintonvolnerphotography.com/uploads/1/3/0/8/130813366/4c0ebcac9.pdf
    • http://files.lyricallyjustified.co.uk/uploads/1/3/1/3/131381881/lobimitetawuwo-repixa-zuzave.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dubisetebezurazoxodo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/58097506778.pdf
    • https://cdn.shopify.com/s/files/1/0439/8622/3262/files/learning_styles_2020.pdf
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/24946639261.pdf
    • https://cdn.shopify.com/s/files/1/0437/6847/9893/files/rasumolasovim.pdf
    • https://cdn.shopify.com/s/files/1/0431/6200/9755/files/54980903056.pdf
    • https://cdn.shopify.com/s/files/1/0432/9324/5590/files/20939483847.pdf
    • https://cdn.shopify.com/s/files/1/0432/9147/6133/files/naridutalewoj.pdf
    • https://cdn.shopify.com/s/files/1/0433/5550/4795/files/16887194426.pdf
    • https://cdn.shopify.com/s/files/1/0432/8708/5222/files/body_systems_and_functions.pdf
    • https://cdn.shopify.com/s/files/1/0434/5413/6473/files/tratamiento_del_cancer_de_cuello_uterino.pdf
    • https://cdn.shopify.com/s/files/1/0428/1512/7708/files/94005388387.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_off0000799b.bin
d8420db10896af118e4eccb15073cab8ff357316785ccb1edcdca8003bc21cc8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x799B 5360 bytes
font_01_sfnt_off00008bd7.bin
96d2a0d15c43c11e5a9c9e497dbab5719dba3652c81e11589846144aea096b31		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BD7 13240 bytes

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