Malicious PDF — malware analysis report

Static analysis result for SHA-256 619766d7cbdcad8e…

MALICIOUS

PDF

34.1 KB Created: 2020-08-30 01:18:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5fa3ad0d466893d39d9cdc9f073ee165 SHA-1: 769aa793af3f54225326168edc547b70ab9e817d SHA-256: 619766d7cbdcad8ef0ab0e39454903f8500dc6d5948b1f83de3a7db25076bc1f
154 Risk Score

Malware Insights

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

The PDF document contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/wix?keyword=exercise+physiology+powers+pdf'. This URL is likely intended to redirect the user to a malicious site. The document also contains a large number of external PDF links, suggesting a link farm or SEO manipulation tactic. While no scripts were explicitly extracted, the presence of embedded URLs and the malicious redirector strongly indicate a phishing or redirection attempt, likely delivered as a spearphishing attachment.

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.cc/wix?keyword=exercise+physiology+powers+pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37394074323.pdf
    • https://cdn.shopify.com/s/files/1/0430/3316/5986/files/43406600254.pdf
    • https://cdn.shopify.com/s/files/1/0431/7003/7924/files/majubavifadesujexoten.pdf
    • https://cdn.shopify.com/s/files/1/0433/9928/2845/files/43570776610.pdf
    • https://static.usrfiles.com/ugd/ad2ade_a9607216ab8649ed9d3e989198c3bff8.pdf
    • https://static.usrfiles.com/ugd/599f1c_7ebdc9862bc9484391caf565a167c9a6.pdf
    • https://static.usrfiles.com/ugd/b13fd1_a771efb8fdde433ab27cdc949193c443.pdf
    • https://static.usrfiles.com/ugd/8de238_8bffe947f3c44f859cf311a33921032c.pdf
    • https://static.usrfiles.com/ugd/9374a7_32a5ca019ca3478cbe20d5a02c675423.pdf
    • https://static.usrfiles.com/ugd/67e251_c7bf0b8288ba49c68d07689e5263476f.pdf
    • https://static.usrfiles.com/ugd/dd4472_a50acb4f47c74e23b82f7c3e4acdb1eb.pdf
    • https://static.usrfiles.com/ugd/11f207_00f6a0125ca344e186a7444392fc7ca3.pdf
    • https://cdn.shopify.com/s/files/1/0429/2270/5055/files/62908561827.pdf
    • https://cdn.shopify.com/s/files/1/0434/6114/8832/files/15306585964.pdf
    • https://cdn.shopify.com/s/files/1/0429/9846/4661/files/femif.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_off0000485d.bin
61dbd1b687a80331457494819197064b26503d8fbd52dd031c5621d1499371a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x485D 5428 bytes
font_01_sfnt_off00005aec.bin
b525c0487ae450297703e3b8465cab2e0efcda9d9e2614250460eebb2f60bb97		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AEC 9628 bytes

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