Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e48e57a6880defd…

MALICIOUS

PDF

41.2 KB Created: 2020-08-13 22:30:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fe9cac4f867b19ffbb4801cb8aa8d66d SHA-1: 6bea4570c3bc74ee5b7e16d3d5b4837d54f4bf7b SHA-256: 1e48e57a6880defd8f5b136c2d5fe66d1da3bbcf3f7482b60600a63fd209fad9
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF SEO link farm, embedding numerous external links, with the primary one leading to 'cdn.shopify.com'. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=appendix+1+request+for+fee+waiver+form', reinforcing the malicious redirector finding. The overall pattern suggests a lure to a malicious site, likely for phishing or malware delivery.

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=appendix+1+request+for+fee+waiver+form
    • http://files.swornoathbrand.com/uploads/1/3/1/3/131380786/62c6aeb1d239624.pdf
    • http://resul.threegracescoffee.com/uploads/1/3/1/3/131383544/9268540.pdf
    • http://files.sihanyang.com/uploads/1/3/1/1/131164402/gerilak-fuvexovozidaxi.pdf
    • https://cdn.shopify.com/s/files/1/0430/0885/2117/files/pibufojaposinafora.pdf
    • https://cdn.shopify.com/s/files/1/0438/4056/9494/files/56537627849.pdf
    • https://cdn.shopify.com/s/files/1/0428/9023/1974/files/balanceamento_de_reaes_exercicios.pdf
    • https://cdn.shopify.com/s/files/1/0433/0265/0014/files/94028699167.pdf
    • https://cdn.shopify.com/s/files/1/0429/7529/7689/files/xovepukewevukimeza.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/81603963226.pdf
    • https://cdn.shopify.com/s/files/1/0435/0512/3493/files/3969853216.pdf
    • https://cdn.shopify.com/s/files/1/0433/9430/2117/files/16787923152.pdf
    • https://cdn.shopify.com/s/files/1/0430/4414/3253/files/roller_coaster_decap_deer.pdf
    • https://cdn.shopify.com/s/files/1/0432/1817/4107/files/internship_report_in_finance.pdf
    • https://cdn.shopify.com/s/files/1/0429/5429/3402/files/15607167652.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_off00006338.bin
5a2a6ca2f1a00ca910017c3353f99b063238f77464c79fe754af2ea06db7cb4c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6338 5544 bytes
font_01_sfnt_off00007613.bin
d9f46d51379d536e1a9688414c7135825523d27b63faddd8806c58a7d5faed79		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7613 9884 bytes

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