Malicious PDF — malware analysis report

Static analysis result for SHA-256 34acc68c7149b30b…

MALICIOUS

PDF

32.5 KB Created: 2020-08-18 21:21:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7bb7cab7b255dd535408f683c594842c SHA-1: d9ecb6996ec7700429382c08a54db4790996513b SHA-256: 34acc68c7149b30bf96f4a7150f88989e7e28f06420540d39e87529e896806e8
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.cc'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL. The primary attack pattern involves redirecting the user to malicious infrastructure, likely for phishing or further 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.cc/pify?keyword=elan+secret+garden+violin+sheet+music
    • http://zefanedu.infantaquaticsct.com/uploads/1/3/1/4/131483371/8018963.pdf
    • http://files.innerselfjourney.com/uploads/1/3/1/4/131453007/nolon-timitazoxi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/91960476686.pdf
    • https://cdn.shopify.com/s/files/1/0437/2817/5265/files/robosejenebozokunofizejo.pdf
    • https://cdn.shopify.com/s/files/1/0437/1123/4199/files/calendario_accademico_unipd_2020.pdf
    • https://cdn.shopify.com/s/files/1/0428/4402/9084/files/my_answering_machine_song.pdf
    • https://cdn.shopify.com/s/files/1/0435/3196/0474/files/at_4500_time_clock_manual.pdf
    • https://cdn.shopify.com/s/files/1/0436/3298/4222/files/causes_and_effects_of_flooding_in_ghana.pdf
    • https://cdn.shopify.com/s/files/1/0431/1236/6229/files/greek_alphabet_files.pdf
    • https://cdn.shopify.com/s/files/1/0434/7068/4317/files/6183571565.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_off00004257.bin
27214b0a76054fb732799fb61749a9ef2fc769e494b2cab85a8f41690e46266a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4257 5372 bytes
font_01_sfnt_off00005477.bin
2bc643c5939b0e82c5de89515db2ba19158e844ab1404cc704bdf42f2bbc7ccb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5477 9676 bytes

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