Malicious PDF — malware analysis report

Static analysis result for SHA-256 64c30c888257a118…

MALICIOUS

PDF

41.4 KB Created: 2020-08-22 15:53:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b47c0fe8bf8a06dbf0a58b1d337b97e9 SHA-1: 4583fa3b1ad8e47594245dbc1bdff525f8400087 SHA-256: 64c30c888257a1189d38e40f776b09ba92860edb646ae181410f648bdeee5790
154 Risk Score

Malware Insights

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

The PDF contains a heuristic firing indicating it links to malicious redirector infrastructure, specifically a URL related to 'sairat full movie pagalworld'. The document body, though heavily obfuscated, also contains this URL and numerous other links to PDF files hosted on various domains, suggesting a link farm or redirection scheme. The ML classifier also strongly flagged this PDF as malicious.

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/pify?keyword=sairat+full+movie++pagalworld
    • http://fosevetuj.kristenmarinoart.com/uploads/1/3/0/8/130814873/pipavugenu.pdf
    • http://files.southdownmethodistpreschool.com/uploads/1/3/0/8/130815437/d8cf228572d.pdf
    • http://files.montaukbeachbungalow.com/uploads/1/3/0/7/130776069/10e9fe1918ba6.pdf
    • http://files.caseyjohnsondesigns.com/uploads/1/3/1/0/131071258/9519488.pdf
    • http://files.fxhugheslaw.com/uploads/1/3/0/7/130738993/kifug.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • https://cdn.shopify.com/s/files/1/0440/8927/8616/files/iceland_golden_circle_map.pdf
    • https://cdn.shopify.com/s/files/1/0439/4817/9611/files/89328136351.pdf
    • https://cdn.shopify.com/s/files/1/0440/7263/2470/files/huskee_lawn_mower_parts.pdf
    • https://cdn.shopify.com/s/files/1/0438/0203/4336/files/setufixukutuxadarurex.pdf
    • https://cdn.shopify.com/s/files/1/0432/3423/0429/files/feviz.pdf
    • https://cdn.shopify.com/s/files/1/0428/9665/4489/files/anatomy_of_flowering_plants_class_11_ncert_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/8652/0224/files/17117382968.pdf
    • https://cdn.shopify.com/s/files/1/0429/2742/3654/files/41017184766.pdf
    • https://cdn.shopify.com/s/files/1/0438/3126/3394/files/57721980272.pdf
    • https://cdn.shopify.com/s/files/1/0440/9730/6776/files/94463576153.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005704.bin
e96e1b826ec62ff165f4c666e1c8c1b4c66410a09c11e1cbb4e64a1aadad49b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5704 5440 bytes
font_01_sfnt_off00006977.bin
ee2f8151a13feb566621ecbf8772e08ea67e9cbcb07c4af39d215130273471d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6977 9908 bytes
font_02_sfnt_off00008ba0.bin
6e5e9e5c9b42bef02a8a59897f408f8925b5aa9244998e2144ab8bc8f761ab30		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BA0 2644 bytes

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