Malicious PDF — malware analysis report

Static analysis result for SHA-256 55ee18f29375d98d…

MALICIOUS

PDF

34.0 KB Created: 2020-08-15 07:42:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6cf00b0a58d40c70c09734da60ed4fed SHA-1: 232e0b228d0d2412788347325d4a3628187ca5ac SHA-256: 55ee18f29375d98dd40d4d103faf26212332794979040acd1280004854a1bbdf
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it points to a known malicious redirector. Additionally, PDF_SEO_LINK_FARM indicates a large number of external links, with the primary one being a Shopify URL. The document body contains a URL that appears to be part of a lure, referencing 'Aatish episode 13' and directly embedding the malicious redirector URL.

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=aatish+episode+13
    • http://dozimulo.taylorrodgers.com/uploads/1/3/1/3/131383377/xasuni.pdf
    • http://files.sscphilly.com/uploads/1/3/0/7/130776069/691eb3.pdf
    • http://files.rhalliburtonstar.com/uploads/1/3/0/7/130739340/85fe0375e09e28.pdf
    • http://files.dancrossmusic.com/uploads/1/3/1/4/131453574/tudetinusukoloraw.pdf
    • https://cdn.shopify.com/s/files/1/0432/1011/3186/files/pokemon_soul_silver_walkthrough.pdf
    • https://cdn.shopify.com/s/files/1/0434/0819/5751/files/wopuwigudobopawuda.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/92313200312.pdf
    • https://cdn.shopify.com/s/files/1/0435/0168/2843/files/affidavit_of_heirship_sample_form.pdf
    • https://cdn.shopify.com/s/files/1/0434/3191/9765/files/mibojaxekujibofenof.pdf
    • https://cdn.shopify.com/s/files/1/0431/2032/8853/files/77112252003.pdf
    • https://cdn.shopify.com/s/files/1/0435/2524/3039/files/memubutap.pdf
    • https://cdn.shopify.com/s/files/1/0436/9140/9562/files/44967239851.pdf
    • https://cdn.shopify.com/s/files/1/0431/8117/9048/files/14073984766.pdf
    • https://cdn.shopify.com/s/files/1/0432/3042/9346/files/wosevadepopini.pdf
    • https://cdn.shopify.com/s/files/1/0429/1110/5191/files/all_accounting_journal_entries.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_off00004a6d.bin
55139519f1b22744ccc933b255d2e116768f0af73e11cdcceaef04de6743269b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4A6D 5124 bytes
font_01_sfnt_off00005bd4.bin
9e7a82f66dd5d7d21334d94a9d2a1a13268a8b34f112c5d1f62798921398c9d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BD4 9380 bytes

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