Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0b170320cf859a0…

MALICIOUS

PDF

39.6 KB Created: 2020-08-13 00:40:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5f5cae89d1740d7c5eb6e8ac550fd0a4 SHA-1: 9a96cc6dbf390bf6889fa56c76ef9b1952ef8fd6 SHA-256: a0b170320cf859a066a7eab26b8cbdc1b17435923031b24c4f4a5cd126b9b52d
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector at `https://ttraff.ru/pify?keyword=the+candy+shop+war+pdf+download`. This indicates an attempt to direct users to malicious infrastructure. The document body, though heavily obfuscated, also contains this URL and other PDF links, reinforcing the lure. The presence of multiple PDF links suggests a link farm or SEO poisoning tactic to attract victims.

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=the+candy+shop+war+pdf+download
    • http://pusazivaw.fisimpson.com/uploads/1/3/0/7/130740510/7698613.pdf
    • http://files.gabrielledeveaux.com/uploads/1/3/2/7/132740399/dasegewerugebi.pdf
    • http://files.daynasdogsitting.com/uploads/1/3/0/7/130738806/bimuzoj.pdf
    • http://files.gbwebtuition.co.uk/uploads/1/3/0/9/130969075/jajojubozepimube.pdf
    • https://cdn.shopify.com/s/files/1/0433/1290/6405/files/89230599780.pdf
    • https://cdn.shopify.com/s/files/1/0427/7927/9527/files/zewalun.pdf
    • https://cdn.shopify.com/s/files/1/0428/4825/6156/files/46509487769.pdf
    • https://cdn.shopify.com/s/files/1/0437/1175/8491/files/36801009135.pdf
    • https://cdn.shopify.com/s/files/1/0437/7139/6257/files/abstraktion_und_einfhlung.pdf
    • https://cdn.shopify.com/s/files/1/0434/4456/8220/files/winepadedazesusekina.pdf
    • https://cdn.shopify.com/s/files/1/0431/9831/6707/files/83068793983.pdf
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/40238692500.pdf
    • https://cdn.shopify.com/s/files/1/0428/2230/3911/files/schistosomiasis_2020.pdf
    • https://cdn.shopify.com/s/files/1/0435/4405/1864/files/61451791552.pdf
    • https://cdn.shopify.com/s/files/1/0431/6590/9160/files/ponokudopogez.pdf
    • https://cdn.shopify.com/s/files/1/0430/9729/2967/files/42542530935.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_off00005001.bin
90eedf39bdbba294566f18760df0f47618d9d91d87ee2739f58c8a919f9b5f86
pdf-font-stream PDF embedded font (sfnt) at offset 0x5001 5044 bytes
font_01_sfnt_off00006126.bin
feecc836c8394d244ab9a6ff8198c1810b8016e9c30a4473fba73a50547b224b
pdf-font-stream PDF embedded font (sfnt) at offset 0x6126 10024 bytes
font_02_sfnt_off00008330.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0x8330 4324 bytes