Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ec9a74f81534157…

MALICIOUS

PDF

49.3 KB Created: 2020-08-22 02:44:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5e8bc583f37f2d12e5cf98670be75864 SHA-1: 878f3052b1181c5610b24cd5e0d15d0bbfbde50f SHA-256: 4ec9a74f8153415795e6899d8846255d1b26014e3bc7a40047b5967445eccabf
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service. The primary malicious link, https://ttraff.ru/pify?keyword=mystic+messenger+email+answers+indie, is identified as a known malicious redirector. This suggests the document's purpose is to direct users to malicious infrastructure, likely for further exploitation or phishing. No scripts were extracted, and the document body is heavily obfuscated.

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=mystic+messenger+email+answers+indie
    • http://files.youthultimateprogram.org/uploads/1/3/1/1/131163533/181385.pdf
    • http://files.yamawarashi.com/uploads/1/3/0/7/130740128/gugivegax-ziturezupefe-pusijewisotumu.pdf
    • https://cdn.shopify.com/s/files/1/0432/2027/1264/files/napadazafabixuxosizexumi.pdf
    • https://cdn.shopify.com/s/files/1/0433/3459/8809/files/caritas_in_veritate.pdf
    • https://cdn.shopify.com/s/files/1/0433/6500/7509/files/68585263621.pdf
    • https://cdn.shopify.com/s/files/1/0439/4188/8155/files/26537120618.pdf
    • https://cdn.shopify.com/s/files/1/0435/9127/0563/files/druid_best_in_slot.pdf
    • https://cdn.shopify.com/s/files/1/0428/8934/7228/files/bearing_calculator.pdf
    • https://cdn.shopify.com/s/files/1/0438/6127/8870/files/15656566056.pdf
    • https://cdn.shopify.com/s/files/1/0434/3123/1637/files/96210397198.pdf
    • https://cdn.shopify.com/s/files/1/0429/5557/1353/files/razukubonewopolawasof.pdf
    • https://cdn.shopify.com/s/files/1/0428/0965/5462/files/wedding_day_timeline_template_printable.pdf
    • https://cdn.shopify.com/s/files/1/0432/9635/8565/files/32388810369.pdf
    • https://cdn.shopify.com/s/files/1/0438/9522/6523/files/molten_glass_rs3.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_off00006a9a.bin
105d69579f03ccf80b16644052ecbfcebd27a61f1d3a6803de1b825303794188		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A9A 5460 bytes
font_01_sfnt_off00007d23.bin
c67a68c36e79f87b84084fe69a862887f74e41bdf55b441cde58d69bc25baad5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D23 11028 bytes
font_02_sfnt_off0000a302.bin
f0fc65c8010c86d0a786044555d61f9fc3859f88de363b73c48bb99a9f2a2d05		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA302 16136 bytes

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