Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b41229be3c82db9…

MALICIOUS

PDF

41.7 KB Created: 2020-08-31 06:11:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 793365acb006accfd0c924fe3a7d2efb SHA-1: baf847453f7cef55c25aa7d35e4149a2b8bea2ac SHA-256: 7b41229be3c82db9f611757bc59fbc565fc106d8952db4a363e0fb9ee02ac860
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, indicating an attempt to lead the user to harmful content. The document body, though heavily obfuscated, also contains the same URL. The presence of numerous external links, many pointing to Shopify, suggests a link farm or SEO poisoning tactic to distribute the malicious URL.

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=what+is+a+fire+tv+recast
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/8186/7176/files/97153851203.pdf
    • https://cdn.shopify.com/s/files/1/0432/4789/4683/files/mapa_politico_do_brasil_estados_e_capitais.pdf
    • https://cdn.shopify.com/s/files/1/0441/0713/7176/files/94248441882.pdf
    • https://cdn.shopify.com/s/files/1/0432/2190/9662/files/microsoft_azure_machine_learning_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0431/2232/7706/files/waterfall_undertale_piano.pdf
    • https://static.usrfiles.com/ugd/15cd4d_7e2eaab62eb14f16a75b7a46ea90bb03.pdf
    • https://static.usrfiles.com/ugd/ce5d00_b88449118e67481faa418d73f44f471c.pdf
    • https://static.usrfiles.com/ugd/f63f29_ffff02a381ef4178b5fc90805a5810db.pdf
    • https://static.usrfiles.com/ugd/9ec29b_4eaeeb6e1a5a4c0ba72fd6c847726a5d.pdf
    • https://static.usrfiles.com/ugd/90c678_b108819600754d9cb53c6625b62fce40.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_off000065d5.bin
002b5bc23e603c02deaeb6e35792c400063386c76231e808187dfae061b53549		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65D5 5008 bytes
font_01_sfnt_off000076e6.bin
504d90eaf1020ffe51e4c45cbbf621a868f73614f2a82a59f14fa9d8182e3bd8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76E6 10464 bytes

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