Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1127751a8980295…

MALICIOUS

PDF

51.1 KB Created: 2020-08-31 09:41:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f312e6d823932a09e4a50e629a2ea3a5 SHA-1: 53293646140fceeebdf46c66b7781518f29d216b SHA-256: e1127751a8980295a69c7b5dfc7b1dd8d9fce68e0ad392d6f79fccb6c8c003b0
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains this URL and numerous other links to Shopify domains, suggesting a link farm or SEO poisoning attempt. The primary malicious URL is likely intended to redirect the user to a malicious site.

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=exerc%25C3%25ADcios+substantivos+e+adjetivos
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/apta_guidelines_for_physical_therapy_documentation.pdf
    • https://cdn.shopify.com/s/files/1/0429/5757/0207/files/loluwatujilalofebobesu.pdf
    • https://cdn.shopify.com/s/files/1/0433/5111/3883/files/hey_whipple_squeeze_this.pdf
    • https://cdn.shopify.com/s/files/1/0433/3853/0965/files/pdf_algorithme_de_tri.pdf
    • https://cdn.shopify.com/s/files/1/0428/8030/3270/files/23710102029.pdf
    • https://static.usrfiles.com/ugd/a640e9_47328a33c428410f909c95d5bab929fb.pdf
    • https://static.usrfiles.com/ugd/105a8c_428aa34599374684982d1db67e69f856.pdf
    • https://static.usrfiles.com/ugd/39cb9d_96eea2b2f66f43a7842bd0b7465ab036.pdf
    • https://cdn.shopify.com/s/files/1/0431/0705/7825/files/rawib.pdf
    • https://cdn.shopify.com/s/files/1/0432/4117/7248/files/neue_horizonte.pdf
    • https://cdn.shopify.com/s/files/1/0455/7009/7317/files/supply_chain_management_articles.pdf
    • https://cdn.shopify.com/s/files/1/0440/7921/8840/files/kipinoge.pdf
    • https://cdn.shopify.com/s/files/1/0428/6844/1254/files/how_to_make_balloon_animals_step_by_step.pdf
    • https://static.usrfiles.com/ugd/912de2_d559989753ab4a0189ee7aa832e521c3.pdf
    • https://static.usrfiles.com/ugd/b8c837_ea6f5ad30806400498256ae0aaad2499.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000078a9.bin
f2ddabce28404c01d32b2e6f8acd7108a2a901e16461722b10f0cfc4f8fdccef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78A9 5136 bytes
font_01_sfnt_off00008a34.bin
edfb1a72289f7ab83f7dacc50a280a1c0553e1a47340552a408fe15ac446abcd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A34 12140 bytes
font_02_sfnt_off0000af34.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAF34 4324 bytes

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