Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7f4ce5b7e277818…

MALICIOUS

PDF

70.1 KB Created: 2020-08-25 15:46:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 84985d0e387ba5fc95369732f9cfa2bc SHA-1: ecf06153f1049a018a145d5d9f579119b1a209cb SHA-256: f7f4ce5b7e2778189a61e6fc63d311c10763e6b4d333433abdf61c42c8cafe80
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains text referencing 'Appscan tutorial pdf' and the malicious URL, suggesting a lure to trick users into visiting the malicious site. The presence of a malicious redirector link indicates the document is designed to lead users to a harmful destination.

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=appscan+tutorial+pdf
    • http://files.fairygrasshopper.com/uploads/1/3/2/7/132741110/7d541fc.pdf
    • https://cdn.shopify.com/s/files/1/0430/4296/3609/files/framing_agenda_setting_and_priming.pdf
    • https://cdn.shopify.com/s/files/1/0431/2622/7093/files/56189340477.pdf
    • https://cdn.shopify.com/s/files/1/0431/2930/7293/files/etica_y_coaching_ontologico_rafael_echeverria.pdf
    • https://cdn.shopify.com/s/files/1/0431/3006/0955/files/medizigiki.pdf
    • https://cdn.shopify.com/s/files/1/0435/2638/9912/files/java_jdk_8.pdf
    • https://cdn.shopify.com/s/files/1/0436/4081/5774/files/animal_gestation_game_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0438/4364/9698/files/73477853146.pdf
    • https://cdn.shopify.com/s/files/1/0435/4742/6975/files/god_of_war_betrayal_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c006.bin
621b1743d9f4bcfd4ce6d919abaff29ed1982f9176931490f9b2a6e0f328c60e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC006 5140 bytes
font_01_sfnt_off0000d181.bin
621806980bb7f568d5ce1d0ac03e7d40397424bbe16ef9d39efdf9d5c335a0ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD181 10704 bytes
font_02_sfnt_off0000f656.bin
4189bb5d82d37c3b06c761c00ca3b3c8a7a7312639514cd6a20481e76712d457		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF656 16388 bytes

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