Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ec8c5bd2a086d6f…

MALICIOUS

PDF

32.3 KB Created: 2020-08-20 04:25:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5cd91cf5c3d99a72d572042840f480ff SHA-1: 86403a722f647f3b68d85d187b92f40f97c43050 SHA-256: 2ec8c5bd2a086d6f35dfffcd16d840e5663c9af8a2967d5b005a74c7abfd0101
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one critical heuristic identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text that appears to be a lure for 'Amerihealth caritas nh provider manual', suggesting a phishing or social engineering attempt. The primary malicious URL identified is https://ttraff.cc/pify?keyword=amerihealth+caritas+nh+provider+manual, which likely leads to further malicious content.

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.cc/pify?keyword=amerihealth+caritas+nh+provider+manual
    • http://files.havenhouse1180.com/uploads/1/3/1/1/131163788/zekerevowepab_zazuwiku.pdf
    • http://files.ardsleydaycamp.org/uploads/1/3/0/7/130776826/535fdd8bb33b2.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/82973104521.pdf
    • https://cdn.shopify.com/s/files/1/0431/6646/6202/files/calgary_map.pdf
    • https://cdn.shopify.com/s/files/1/0434/9440/8354/files/maharashtra_rto_passing_list_2020.pdf
    • https://cdn.shopify.com/s/files/1/0431/6410/6901/files/tomisizifa.pdf
    • https://cdn.shopify.com/s/files/1/0431/0342/0570/files/ranuko.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38743570217.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dagezaluvonanapukinuwit.pdf
    • https://cdn.shopify.com/s/files/1/0438/1966/3517/files/aday_retmen_snav_kitab.pdf
    • https://cdn.shopify.com/s/files/1/0434/0360/8216/files/bee_venom_collector.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_off000040ec.bin
61c5a1fc7cc486c06e235ff8187c841ed69f8d68499f46b61232883b378a3006		 pdf-font-stream PDF embedded font (sfnt) at offset 0x40EC 5364 bytes
font_01_sfnt_off000052f5.bin
26d36a2b7506c07be6e4264e0fbe3cdc003caf289389d43523442e7092a44ff5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52F5 9796 bytes

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