Malicious PDF — malware analysis report

Static analysis result for SHA-256 98d98a6c34afca13…

MALICIOUS

PDF

66.7 KB Created: 2020-08-20 09:33:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 94edb683edc3f4132460528ac3ff85a6 SHA-1: a3012818f1efe71f944107d174a35693fab8f76f SHA-256: 98d98a6c34afca13359418c6b13c29398c6376006e36d1f3182e59120c451237
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure, specifically `https://ttraff.com/pify?keyword=pile+load+test+report+format`. The document body, though heavily obfuscated, contains text that appears to be a lure related to a "Pile load test report format". The presence of a link farm suggests an attempt to drive traffic to malicious sites, likely for phishing or malware 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=pile+load+test+report+format
    • http://files.charisacctservices.com/uploads/1/3/1/6/131606758/caf2cc85aa266e.pdf
    • http://detumikij.nmillerillustration.com/uploads/1/3/0/8/130873876/torotal-jamopek.pdf
    • https://cdn.shopify.com/s/files/1/0428/2325/4179/files/20443009382.pdf
    • https://cdn.shopify.com/s/files/1/0432/7541/9798/files/farukuxatozolesopamimuzim.pdf
    • https://cdn.shopify.com/s/files/1/0437/8905/8206/files/rusajosavisovupukogor.pdf
    • https://cdn.shopify.com/s/files/1/0437/3548/2529/files/23699854495.pdf
    • https://cdn.shopify.com/s/files/1/0429/8607/8369/files/87409137359.pdf
    • https://cdn.shopify.com/s/files/1/0431/5371/9453/files/4724012927.pdf
    • https://cdn.shopify.com/s/files/1/0437/9613/6098/files/52160687520.pdf
    • https://cdn.shopify.com/s/files/1/0433/1605/2123/files/wesoxiwemazodina.pdf
    • https://cdn.shopify.com/s/files/1/0436/7994/0761/files/faperorodomijivulotix.pdf
    • https://cdn.shopify.com/s/files/1/0435/5008/1183/files/drop_table_rails.pdf
    • https://cdn.shopify.com/s/files/1/0430/9729/2949/files/21529379958.pdf
    • https://cdn.shopify.com/s/files/1/0431/6174/7605/files/95420430198.pdf
    • https://cdn.shopify.com/s/files/1/0429/2670/2758/files/nabcep_practice_test.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_off0000bd1a.bin
1e9e457fc373d3b53630dc5fee9876af55d0b913a00e24f55c38ab7462130fa5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBD1A 5188 bytes
font_01_sfnt_off0000cea1.bin
2feef51e43ef0044f178510d71c5b317f6c57211d661b7d3f71d297b324568f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCEA1 14908 bytes

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