Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c2e5b0bd9aaa1ba…

MALICIOUS

PDF

48.8 KB Created: 2020-08-25 22:31:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 10d9f927cf348b6949cdc52d705c5893 SHA-1: 858797b70bbc41f04af7cc4a8daf49ec261949ca SHA-256: 2c2e5b0bd9aaa1ba6993c1defe7f276325a8def5fca838ba47907fc8e8bf71a9
152 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one critical heuristic identifying a link to a known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=societe+generale+ville+d+avray'. Another heuristic indicates a large number of external PDF links, suggesting a link farm or SEO poisoning attempt. The ML classifier strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the malicious URL and several benign-looking PDF links hosted on Shopify, likely to lend legitimacy.

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/pify?keyword=societe+generale+ville+d+avray
    • http://rarujinaf.objectpages.com/uploads/1/3/1/4/131453872/jogadug_falerun_visimuleve_fibawesazu.pdf
    • http://files.topeducationltd.com/uploads/1/3/0/8/130813548/bepeketojegov.pdf
    • http://setan.europlasma.net/uploads/1/3/1/6/131606624/wedumol-vufefutokevar-gatuzujiz-fopobepuj.pdf
    • http://files.sandiegodrumsetlessons.com/uploads/1/3/1/0/131070152/viwakiviwu_zebatubo.pdf
    • https://cdn.shopify.com/s/files/1/0431/0876/1764/files/naworosoxenitukunaxagon.pdf
    • https://cdn.shopify.com/s/files/1/0432/9131/2288/files/suwavimefip.pdf
    • https://cdn.shopify.com/s/files/1/0428/9763/7535/files/free_movie_s_no_registration_2017.pdf
    • https://cdn.shopify.com/s/files/1/0440/0896/4246/files/w10m_bridge_rectifier.pdf
    • https://cdn.shopify.com/s/files/1/0429/6310/8003/files/zudinowuro.pdf
    • https://cdn.shopify.com/s/files/1/0432/2351/5294/files/fusionner_avec_adobe_acrobat.pdf
    • https://cdn.shopify.com/s/files/1/0429/2355/7030/files/69090489468.pdf
    • https://cdn.shopify.com/s/files/1/0433/6710/4668/files/foxit_phantom_editor_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/5648/0935/files/bomarodir.pdf
    • https://cdn.shopify.com/s/files/1/0427/6387/8566/files/36876619301.pdf
    • https://cdn.shopify.com/s/files/1/0432/1312/7835/files/19578755417.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f9d.bin
fb811d3393d98b60eeb71f2c46c58c4c87e66344b7358fa007126fe432d159ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F9D 5196 bytes
font_01_sfnt_off00007144.bin
9fcfd2b2c12c9d480c0beec3ee39f05b9e518edc5177a7a5fcc68dff0371f8a2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7144 2092 bytes
font_02_sfnt_off00007ae5.bin
3b02c75b84fa3823c64c49c13cf9ba379b089e7cbdf8956cb5204cbb7814109f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AE5 11388 bytes
font_03_sfnt_off0000a06b.bin
d37ea38084deb19f7a5828c597dc8b9fc086c01dd481d9cf221b2585205fbc4e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA06B 16144 bytes

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