Malicious PDF — malware analysis report

Static analysis result for SHA-256 deb25acfa667dd1c…

MALICIOUS

PDF

38.6 KB Created: 2020-08-01 06:49:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ae0bbc0717363d6c82a7f40e85286308 SHA-1: 9eef2a7b08c7670f30e7fa779e3ebe5f23f98a30 SHA-256: deb25acfa667dd1c8da1fa32f00c498827747d445f254d96c2c4d97e88d8150c
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one specifically identified as a malicious redirector (https://ttraff.ru/pify?keyword=mikes+rpg+center). This suggests the document's primary purpose is to lure users to malicious websites, likely for phishing or malware distribution. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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.ru/pify?keyword=mikes+rpg+center
    • http://files.corneroffice-i.com/uploads/1/3/0/7/130739234/29ec1bc9c.pdf
    • http://files.wallaceandfeldman.com/uploads/1/3/1/4/131407709/vitolobalobonadut.pdf
    • http://files.fragileparadise.com/uploads/1/3/1/4/131413678/dazapad_detesaja_judazekamusakog.pdf
    • http://files.planning4yourfuture.com/uploads/1/3/0/7/130739674/mosezimagugipiwaba.pdf
    • https://cdn.shopify.com/s/files/1/0431/0863/0681/files/82592378487.pdf
    • https://cdn.shopify.com/s/files/1/0433/4305/2953/files/90493633024.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/7614883084.pdf
    • https://cdn.shopify.com/s/files/1/0429/6779/3820/files/42430139409.pdf
    • https://cdn.shopify.com/s/files/1/0433/1801/8216/files/jelojunaropow.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/2857609843.pdf
    • https://cdn.shopify.com/s/files/1/0428/4815/7859/files/mabumuvamagoripudozexu.pdf
    • https://cdn.shopify.com/s/files/1/0437/0500/8293/files/35430336452.pdf
    • https://cdn.shopify.com/s/files/1/0435/4041/4615/files/8216367607.pdf
    • https://cdn.shopify.com/s/files/1/0430/8742/9785/files/19408440171.pdf
    • https://cdn.shopify.com/s/files/1/0440/6611/1638/files/windows_7_32_bits_torrent.pdf
    • https://cdn.shopify.com/s/files/1/0427/4146/5244/files/70519461484.pdf
    • https://cdn.shopify.com/s/files/1/0429/7300/3939/files/pebejufogaromelaruxomut.pdf
    • https://cdn.shopify.com/s/files/1/0433/4672/2974/files/kefudetinepek.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004f8b.bin
2c06af07d9c3ed41ee6811cbed0338d04be68cc39ff11be14c5a34029d309e8c
pdf-font-stream PDF embedded font (sfnt) at offset 0x4F8B 3068 bytes
font_01_sfnt_off00005a7a.bin
d772991b32b27584f86b8f56f6223a5c832d7b32c97727d6429d7e6b9a984030
pdf-font-stream PDF embedded font (sfnt) at offset 0x5A7A 4928 bytes
font_02_sfnt_off00006b6a.bin
dd5c77c17ae76664970ec4f965d4aed7bc32b0f7a358d43b9b9426a8f0f3e6a1
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B6A 9904 bytes