Malicious PDF — malware analysis report

Static analysis result for SHA-256 836a1e0843f412eb…

MALICIOUS

PDF

51.2 KB Created: 2020-08-10 11:00:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 82a73c7e8b62cac87a1a46509d8f1e07 SHA-1: ad1759966fe9d2771a1cf09451440c1f88304334 SHA-256: 836a1e0843f412eb52e1bf9418489f23a4f3ee4abb56dc7cdc0c783a5ef587e3
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a critical redirector link to 'ttraff.com'. This indicates the document is designed to lead users to malicious infrastructure, likely for phishing or malware distribution. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=anesthesia+made+easy+pdf', reinforcing the malicious intent. The presence of numerous shopify.com links suggests an attempt to blend in with legitimate content while masking the primary malicious URL.

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.com/pify?keyword=anesthesia+made+easy+pdf
    • http://files.mastconsultancy.com/uploads/1/3/1/3/131384429/perapomasudu_gedelozaxow_pinajovenubukoz.pdf
    • http://files.stmarkstampa.org/uploads/1/3/1/4/131411596/bubamudapufi_runaji_murumozodazob.pdf
    • http://files.drcarriebrennan.com/uploads/1/3/1/6/131606111/wivavudujizu-pelidu.pdf
    • https://cdn.shopify.com/s/files/1/0431/3173/2132/files/lovugosagifeluragemili.pdf
    • https://cdn.shopify.com/s/files/1/0430/4555/2277/files/36050666796.pdf
    • https://cdn.shopify.com/s/files/1/0431/3192/8730/files/26407803265.pdf
    • https://cdn.shopify.com/s/files/1/0428/1162/1543/files/kibevomobezilitufi.pdf
    • https://cdn.shopify.com/s/files/1/0431/8245/7000/files/34030268432.pdf
    • https://cdn.shopify.com/s/files/1/0437/9282/6517/files/40803476514.pdf
    • https://cdn.shopify.com/s/files/1/0433/5386/6408/files/isospora_belli_morphology.pdf
    • https://cdn.shopify.com/s/files/1/0432/7899/1520/files/rinumuvadusenusikibomejeb.pdf
    • https://cdn.shopify.com/s/files/1/0445/9141/5460/files/beatles_let_it_be_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0431/3533/6616/files/types_of_emotions_list.pdf
    • https://cdn.shopify.com/s/files/1/0433/3089/6026/files/43325130570.pdf
    • https://cdn.shopify.com/s/files/1/0428/8066/3715/files/beekeeping_tools_and_equipment.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_off000088db.bin
560eebe929a41b82f8eaca78157fb0221f0782503598a03e3af09aacc8f9a817		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88DB 5244 bytes
font_01_sfnt_off00009a9f.bin
8765431a80b3bf16f88225039bbf052e1997e87f0f96bb62f5dc4c8016a6000a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A9F 10604 bytes

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