Malicious PDF — malware analysis report

Static analysis result for SHA-256 b913391c5fc0a893…

MALICIOUS

PDF

42.1 KB Created: 2020-08-04 15:06:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4989c11c3333af3625bc87dea5799141 SHA-1: c3f54428351d2b14e2dc490de364ad347f9df3ac SHA-256: b913391c5fc0a8937d9bec4390151be0b985e675920649b3a41bc728ddff335c
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to benign Shopify URLs but one critical link to a known malicious redirector at ttraff.com. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=blood+type+ab+positive+diet+pdf', indicating a lure to a malicious site. The presence of numerous links suggests an attempt to obscure the malicious destination and potentially leverage SEO tactics for distribution.

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=blood+type+ab+positive+diet+pdf
    • http://files.foundersworkshophr.com/uploads/1/3/0/8/130874018/ee5619bb8ac8.pdf
    • http://files.creatingmathsuccess.com/uploads/1/3/1/6/131606011/6a3cc0.pdf
    • http://files.marlrod.com/uploads/1/3/0/7/130775918/9506046.pdf
    • https://cdn.shopify.com/s/files/1/0437/9151/5808/files/visipijejul.pdf
    • https://cdn.shopify.com/s/files/1/0434/2421/9293/files/36519672813.pdf
    • https://cdn.shopify.com/s/files/1/0433/2024/6427/files/reductio_ad_absurdum_example.pdf
    • https://cdn.shopify.com/s/files/1/0435/1311/8872/files/16968310610.pdf
    • https://cdn.shopify.com/s/files/1/0438/6163/9318/files/59606472524.pdf
    • https://cdn.shopify.com/s/files/1/0429/9928/3861/files/56238598954.pdf
    • https://cdn.shopify.com/s/files/1/0431/8891/2290/files/84057687573.pdf
    • https://cdn.shopify.com/s/files/1/0433/1061/2644/files/zisetedapelipoz.pdf
    • https://cdn.shopify.com/s/files/1/0434/7317/4680/files/convert_decimal_to_hex.pdf
    • https://cdn.shopify.com/s/files/1/0429/2925/8649/files/26926920114.pdf
    • https://cdn.shopify.com/s/files/1/0433/1202/1662/files/kejamedoxexovawonusud.pdf
    • https://cdn.shopify.com/s/files/1/0434/0416/5285/files/logifaguzepojiwez.pdf
    • https://cdn.shopify.com/s/files/1/0428/3321/5654/files/76502369912.pdf
    • https://cdn.shopify.com/s/files/1/0430/7730/4484/files/40487041578.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_off000064f5.bin
06a80f08116c7c5be4e8f92d76e64b75c345c4fb756bfb5ac3b95405df9fc48b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64F5 5288 bytes
font_01_sfnt_off00007712.bin
5c8cf899057ff7250c54d2a9ae8a8025fe62566b163b446795c8cae063e142b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7712 10780 bytes

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