Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e493ba901262dbc…

MALICIOUS

PDF

49.7 KB Created: 2020-07-25 06:21:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3586f2cc3a27e37e4098b81ea16e3ccf SHA-1: f00e1c062a6e58d1c7d60127059034ea5561e930 SHA-256: 4e493ba901262dbc23c7d7be5908637f67c3e9fe0dfc724d789fdc4b26f3ebce
152 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics indicating malicious redirector links and a link farm. The ML classifier also strongly indicated maliciousness. The embedded links, particularly the one pointing to 'ttraff.com', are highly suspicious and likely serve as a lure to a phishing site or a download for further malicious payloads. The document body, though heavily obfuscated, contains text that appears to be related to movie titles, possibly a lure.

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=bailaras+movie+pyar+song
    • http://files.empowerptandwellness.com/uploads/1/3/2/6/132682681/wazuzijiv.pdf
    • http://files.kilkennyarchclub.com/uploads/1/3/2/6/132681823/e8eccbd6c7e29f.pdf
    • http://files.tacdistancerunners.com/uploads/1/3/1/3/131380547/gokega.pdf
    • https://cdn.shopify.com/s/files/1/0434/3064/1826/files/pasasuvojuliwadixeluxarul.pdf
    • https://cdn.shopify.com/s/files/1/0433/4950/8246/files/75879544356.pdf
    • https://cdn.shopify.com/s/files/1/0436/6296/6937/files/1877086051.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/15125842299.pdf
    • https://cdn.shopify.com/s/files/1/0436/2931/4206/files/7481891947.pdf
    • https://cdn.shopify.com/s/files/1/0435/5158/8507/files/bizokofosaxakow.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/12729031526.pdf
    • https://cdn.shopify.com/s/files/1/0432/1610/9736/files/dekolatigituxorolesagofo.pdf
    • https://cdn.shopify.com/s/files/1/0438/8156/2280/files/bogipuzasafikevatoz.pdf
    • https://cdn.shopify.com/s/files/1/0431/2704/6298/files/81909662005.pdf
    • https://cdn.shopify.com/s/files/1/0430/2408/9242/files/modasawigir.pdf
    • https://cdn.shopify.com/s/files/1/0434/7356/7894/files/gewemexepukovepo.pdf
    • https://cdn.shopify.com/s/files/1/0428/5651/3692/files/sopamupoxulagudifoji.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nejoxalivivurotuzepebibus.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007af9.bin
2b9bc789c1e4830d53319978e21efcec159b4fa2138cccfc938e00ff804b4393		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AF9 5060 bytes
font_01_sfnt_off00008c0d.bin
1542f2d6f7374b1318cf76575cfc8cb67b1c3cfc13339e4e8a4f003604bd77e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C0D 14644 bytes

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