Malicious PDF — malware analysis report

Static analysis result for SHA-256 006dede8f9ea4730…

MALICIOUS

PDF

75.2 KB Created: 2020-08-31 14:02:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c932812a4f8308e10f6b5ea577c9e3a1 SHA-1: 95156cddbae24a7444e575aaad66a36d32e9d6a8 SHA-256: 006dede8f9ea473038a6e3c84735e49a7dde8d4127d8223bf4950beda778b3c9
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a mass of external links, with one prominent link leading to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to sheet music and the malicious URL, suggesting a lure to trick users into clicking the link. The ML classifier strongly indicates maliciousness.

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.com/wix?keyword=martini+gavotte+suzuki+book+3+sheet+music
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/1767/4656/files/gudenuzulejolejoniwo.pdf
    • https://cdn.shopify.com/s/files/1/0471/0694/9270/files/mopitolesanekewo.pdf
    • https://cdn.shopify.com/s/files/1/0440/3652/2149/files/gakuzujogepuguxuxenujowid.pdf
    • https://cdn.shopify.com/s/files/1/0434/0809/7445/files/fadokelutukekuporoxexe.pdf
    • https://cdn.shopify.com/s/files/1/0431/7885/2507/files/broadview_alarm_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/0805/5720/files/cubiertas_verdes.pdf
    • https://cdn.shopify.com/s/files/1/0437/2358/7736/files/2835010887.pdf
    • https://cdn.shopify.com/s/files/1/0430/9889/8592/files/zadasaxidofonanabekoku.pdf
    • https://static.usrfiles.com/ugd/96768c_42bf22a6f8114dce84aa25bf2be7b92b.pdf
    • https://static.usrfiles.com/ugd/4ae4db_a19dfc0db41043dda2cad9b81c0ac8d5.pdf
    • https://static.usrfiles.com/ugd/b8c837_4ab9fea6b2844dde98454f9542b0f382.pdf
    • https://cdn.shopify.com/s/files/1/0436/2305/5523/files/aashto_standard_specifications_for_highway_bridges_17th_edition_free.pdf
    • https://cdn.shopify.com/s/files/1/0429/1962/4870/files/tixenolugip.pdf
    • https://cdn.shopify.com/s/files/1/0430/3123/2675/files/new_holland_c227_operators_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/9581/8404/files/21880654804.pdf
    • https://cdn.shopify.com/s/files/1/0432/1758/4283/files/mario_bros_background.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_off0000d9ff.bin
69beb483b9e4ba25b92dc96ccf2b793e654743af34d26633a1da53ba89745169		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD9FF 5664 bytes
font_01_sfnt_off0000ed43.bin
a8c65bec4129f2072af75aaf2f702555190060b82489b628f717aea90080bb71		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED43 16728 bytes

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