Malicious PDF — malware analysis report

Static analysis result for SHA-256 88fb2902a919eff5…

MALICIOUS

PDF

82.1 KB Created: 2020-08-06 22:29:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8d90b6d8138b8ce66537d2cc4f659fb3 SHA-1: af8807149c54da6f96aa7106d524266765849cd2 SHA-256: 88fb2902a919eff5f1addc2a24b4788cebb291c97b930f8fea3cc04f4b9de565
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 'https://ttraff.ru/pify?keyword=glycosylation+in+golgi+complex+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, including one to 'https://cdn.shopify.com/s/files/1/0433/8892/8150/files/33664817269.pdf'. The document body, though heavily obfuscated, contains the malicious URL, reinforcing the redirection attempt.

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.ru/pify?keyword=glycosylation+in+golgi+complex+pdf
    • http://files.cogitojiujitsu.com/uploads/1/3/1/3/131398143/bowuputolozulujaris.pdf
    • http://files.daviessurveys.com/uploads/1/3/0/8/130873804/43f4ead2.pdf
    • http://files.rochellelucey.com/uploads/1/3/1/3/131381612/9143e.pdf
    • http://files.hemingwaycottage.com/uploads/1/3/0/9/130969735/volupuk-sigorak.pdf
    • http://files.sacredheartfc.org/uploads/1/3/2/6/132682607/1998813.pdf
    • https://cdn.shopify.com/s/files/1/0433/8892/8150/files/33664817269.pdf
    • https://cdn.shopify.com/s/files/1/0429/3849/9235/files/repipamumemeputu.pdf
    • https://cdn.shopify.com/s/files/1/0435/6440/0798/files/rufuwigowikarekefafimi.pdf
    • https://cdn.shopify.com/s/files/1/0429/7857/4490/files/12845621807.pdf
    • https://cdn.shopify.com/s/files/1/0434/0600/0282/files/3162187769.pdf
    • https://cdn.shopify.com/s/files/1/0428/5631/7091/files/7139143914.pdf
    • https://cdn.shopify.com/s/files/1/0429/4026/8711/files/24244730075.pdf
    • https://cdn.shopify.com/s/files/1/0440/3272/1046/files/automatic_gear_transmission_for_two_wheeler.pdf
    • https://cdn.shopify.com/s/files/1/0432/2318/7618/files/40497190922.pdf
    • https://cdn.shopify.com/s/files/1/0428/7997/5590/files/gigiwekunudabiwep.pdf
    • https://cdn.shopify.com/s/files/1/0433/4603/4846/files/nufotama.pdf
    • https://cdn.shopify.com/s/files/1/0429/3269/9295/files/alto_s_lament.pdf
    • https://cdn.shopify.com/s/files/1/0429/1277/6351/files/86222643416.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e216.bin
8cb7014c26666ca7a793f77601ad6a808999fd9da587b07dc422f4072c40eca3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE216 5368 bytes
font_01_sfnt_off0000f457.bin
54c571191861b0cc15fe7fcb2737c35a4c3c226cf483cd42592f5427c102f240		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF457 10124 bytes
font_02_sfnt_off0001173d.bin
aabbb95e4258a1bccfe6759090a0a8b97a33e8154131110566ffb2eaa8fdb080		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1173D 16148 bytes
font_03_sfnt_off00012c33.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12C33 4324 bytes

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