Malicious PDF — malware analysis report

Static analysis result for SHA-256 4963bed8958b058e…

MALICIOUS

PDF

65.4 KB Created: 2020-07-31 18:18:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f892adb019f9a0fc8912d69627bd4853 SHA-1: dc7c54b78bb84ed1d8a093c075cbe50e759af520 SHA-256: 4963bed8958b058ea2b9c7aecaeac26e75bada4a8f20ce659b6bda9f9393eadb
152 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=pokemon+platinum+guide+book+pdf'. The document body, though heavily obfuscated, appears to contain text related to a 'Pokemon platinum guide book pdf', suggesting a lure. The PDF also contains a link farm heuristic, indicating it's part of a larger SEO manipulation effort to distribute malicious content. The ML classifier 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=pokemon+platinum+guide+book+pdf
    • http://files.pcconfections.com/uploads/1/3/0/7/130775619/taveleba_misup_xosagasovul.pdf
    • http://files.angiessnowhut.com/uploads/1/3/1/1/131163559/jozal_xitoperokijusaf.pdf
    • http://files.bayareasomaticpsychotherapy.com/uploads/1/3/0/9/130969478/354538de2dc.pdf
    • http://files.gowoonlee.com/uploads/1/3/1/0/131069819/doguluwedi.pdf
    • https://cdn.shopify.com/s/files/1/0433/5170/3706/files/getepopijus.pdf
    • https://cdn.shopify.com/s/files/1/0437/3879/2085/files/60859024409.pdf
    • https://cdn.shopify.com/s/files/1/0432/8790/4422/files/10175535876.pdf
    • https://cdn.shopify.com/s/files/1/0433/9033/7174/files/zijeketamil.pdf
    • https://cdn.shopify.com/s/files/1/0430/6845/7122/files/woropupapozetilixojaf.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/19941062624.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/10809735118.pdf
    • https://cdn.shopify.com/s/files/1/0435/8737/1171/files/vafawowapemu.pdf
    • https://cdn.shopify.com/s/files/1/0432/0909/7384/files/73147295029.pdf
    • https://cdn.shopify.com/s/files/1/0433/7152/8344/files/vakobafid.pdf
    • https://cdn.shopify.com/s/files/1/0434/7107/7542/files/rilodisewadew.pdf
    • https://cdn.shopify.com/s/files/1/0433/4508/4574/files/63491855335.pdf
    • https://cdn.shopify.com/s/files/1/0435/0138/7936/files/lovolenirefid.pdf
    • https://cdn.shopify.com/s/files/1/0433/1926/3397/files/rawinimekigifadaxu.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_off00009ca3.bin
39f4fcd1455712461882eeb8565b547f40beb4e058732a0d8996326c8f8c5601		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9CA3 5176 bytes
font_01_sfnt_off0000ae27.bin
6f8af1eb52645e965825b93b1bf62ecf9666e6091d51590ff890f32a2c99935f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAE27 10756 bytes
font_02_sfnt_off0000d30d.bin
f6e0f4a25f18a144688c6b7f40519a5efc98c72643b9054f89526e396d9b459d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD30D 16144 bytes
font_03_sfnt_off0000e80e.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE80E 4324 bytes

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