Malicious PDF — malware analysis report

Static analysis result for SHA-256 27abf7460c34cf7b…

MALICIOUS

PDF

39.7 KB Created: 2020-08-03 06:16:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 06a1c31928f6b4c6b285ebafa003112e SHA-1: d400b8a2ee47bb1d70644932a4c2df1e86c334a6 SHA-256: 27abf7460c34cf7b7e4210e03a99ebde4415e6438b757934bb6f6fc1adb69c87
128 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one critical heuristic identifying a malicious redirector link. The document body, though heavily obfuscated, contains text that appears to be a lure for a 'hodgdon reloading manual 2016 pdf'. The primary malicious IOC is the redirector URL, which likely leads to a further stage of the attack. No scripts were extracted from this sample.

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=hodgdon+reloading+manual+2016+pdf
    • http://files.josegagonzalez.com/uploads/1/3/2/7/132712209/xixesawaduwowumumuso.pdf
    • http://files.debraheschl.com/uploads/1/3/0/7/130775639/1503966.pdf
    • http://files.michaelbrownslawoffice.com/uploads/1/3/1/4/131406762/xajixolaxexojobegu.pdf
    • https://cdn.shopify.com/s/files/1/0431/6859/6124/files/3794055432.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/53607129813.pdf
    • https://cdn.shopify.com/s/files/1/0429/8535/7463/files/23968631334.pdf
    • https://cdn.shopify.com/s/files/1/0432/2358/0831/files/merge_sort_linked_list.pdf
    • https://cdn.shopify.com/s/files/1/0432/1283/2931/files/mafesigapaf.pdf
    • https://cdn.shopify.com/s/files/1/0433/8896/0933/files/53369170931.pdf
    • https://cdn.shopify.com/s/files/1/0430/4008/0023/files/discord_server_management.pdf
    • https://cdn.shopify.com/s/files/1/0437/4993/3208/files/42036811171.pdf
    • https://cdn.shopify.com/s/files/1/0433/0107/7142/files/85705611569.pdf
    • https://cdn.shopify.com/s/files/1/0437/7319/8497/files/157943310.pdf
    • https://cdn.shopify.com/s/files/1/0430/3106/8823/files/botulaji.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_off00005bf0.bin
f39300086f80d4027837e9f8a04dd82793b263731795364908a4202862bbbf99		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BF0 5624 bytes
font_01_sfnt_off00006eff.bin
1d0d787622b748f83177c5e818ab8eb0e97a8ba4a05568b4f0d7a440e48d6028		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EFF 10356 bytes

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