Malicious PDF — malware analysis report

Static analysis result for SHA-256 f051f6e663009de1…

MALICIOUS

PDF

38.6 KB Created: 2020-09-16 14:48:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 72e8be326efd884a7e64edff71e940e9 SHA-1: 7cd6e0406d22e9887f1f49ca10273af36e239bdd SHA-256: f051f6e663009de112cd89a5bbc295ed1c8a7494cd6ab8734c520e6b278c0a5f
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing indicating a PDF link farm. One of these links, 'https://ttraff.club/wix?keyword=ir+and+ser+preterite+practice', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the primary purpose is to lure users to malicious sites.

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.club/wix?keyword=ir+and+ser+preterite+practice
    • https://cdn.shopify.com/s/files/1/0431/6479/5044/files/85098759655.pdf
    • https://cdn.shopify.com/s/files/1/0431/3628/6877/files/fixokokamidofupix.pdf
    • https://cdn.shopify.com/s/files/1/0431/3019/2039/files/mesep.pdf
    • https://cdn.shopify.com/s/files/1/0438/3460/5725/files/bhajan_free_audio.pdf
    • https://cdn.shopify.com/s/files/1/0437/9204/0097/files/major_challenges_of_management_information_system.pdf
    • https://9026fee8-cb30-47f9-8e52-1c8743f2df2e.filesusr.com/ugd/61b8bf_022b9f81f4a64228aba7cf688027e086.pdf?index=true
    • https://df576241-a847-4978-b16e-0067e0aec8dc.filesusr.com/ugd/24deb6_7e220b278a96403d8bbcb1601dce8f3e.pdf?index=true
    • https://28f42826-49c4-44f2-afc0-0b306e022e28.filesusr.com/ugd/6f9b04_5d404fde318c4463b101514db6007311.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0433/4895/1194/files/the_mistress_manual.pdf
    • https://cdn.shopify.com/s/files/1/0427/5326/1724/files/free_download_nitro_to_word_converter_with_crack.pdf
    • https://cdn.shopify.com/s/files/1/0431/1344/7584/files/gefopulepeledu.pdf
    • https://cdn.shopify.com/s/files/1/0430/6380/4058/files/kilotepasumosanuk.pdf
    • https://cdn.shopify.com/s/files/1/0437/7811/3690/files/cymera_terbaru_apk.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_off0000594b.bin
e435353142a29c4b8cf0bd4fccd350fbec785d8e1206d309b00652ed376280a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x594B 4972 bytes
font_01_sfnt_off00006a3f.bin
d1d14499172a4e05038ed4d11b6ef894dcd41b6a8e560189305abe4649d1a81a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A3F 10452 bytes

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