Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0331f7178d76e91…

MALICIOUS

PDF

44.5 KB Created: 2020-08-19 08:39:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aac147583066374dc686dd8c5f465c58 SHA-1: 108cc7c64ceb5bac70423411394007f9f3dbe9ff SHA-256: e0331f7178d76e912afb425a12db8f5a43c231dd36f0a0a296e7a0072dd55725
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link that redirects to known malicious infrastructure, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body and embedded links suggest a lure to download a template, which is a common social engineering tactic. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, many pointing to Shopify, likely to obscure the malicious redirector.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=invitation+card+template+photoshop
    • http://files.byfivephotography.com/uploads/1/3/2/6/132682829/ce3109.pdf
    • http://files.garrettmcqueen.com/uploads/1/3/0/8/130814232/vasodubog.pdf
    • http://files.thegatlinfamily.com/uploads/1/3/2/3/132303163/jogeli.pdf
    • http://files.andairewenatchee.com/uploads/1/3/1/6/131636655/2867081.pdf
    • https://cdn.shopify.com/s/files/1/0434/7969/5517/files/garment_costing_sheet_format.pdf
    • https://cdn.shopify.com/s/files/1/0429/5488/3231/files/77079363232.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/runuwadobona.pdf
    • https://cdn.shopify.com/s/files/1/0434/0301/8392/files/types_of_interest_rate_derivatives.pdf
    • https://cdn.shopify.com/s/files/1/0429/4731/3827/files/89139737460.pdf
    • https://cdn.shopify.com/s/files/1/0430/2422/0321/files/xojotumimemofa.pdf
    • https://cdn.shopify.com/s/files/1/0432/8413/6086/files/adobe_printer_driver_download_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/1231/6584/files/lightning_crashes_chords.pdf
    • https://cdn.shopify.com/s/files/1/0431/4664/1570/files/36618865793.pdf
    • https://cdn.shopify.com/s/files/1/0438/4430/5061/files/50350156227.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_off00007088.bin
c82a8c695e9bbb6d0956256481d69eb3761c59302cff359a237972a75e564a05		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7088 5312 bytes
font_01_sfnt_off00008268.bin
5c8ad30ef5b5ee7cfe08d6814b9559bc90fa0801272a35f503002211e2fe048e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8268 10056 bytes

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