Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7edd527936c8241…

MALICIOUS

PDF

45.2 KB Created: 2020-08-12 15:24:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 154ff153139abb9188e99a3eada42edb SHA-1: 2e20b2869010eff3b4a28050a8bf4540a7497798 SHA-256: e7edd527936c82411aaaa9fa923e9fe4b7b522df67b8dcf8faaa7cbe06501977
128 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.com'. This indicates the document's primary purpose is to redirect users to potentially harmful content. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify, suggesting an attempt to obscure the final destination or leverage legitimate platforms for distribution. The presence of a 'download button' heuristic further supports the lure-based nature of this document.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=bse+odisha+9th+class+english+grammar+book+pdf
    • http://files.towncenterinc.org/uploads/1/3/0/7/130739837/375e68fd9a1b1.pdf
    • http://files.aacnationals2016.com/uploads/1/3/2/3/132303081/8483973.pdf
    • http://xibemu.biglevel.net/uploads/1/3/1/4/131408024/1982604.pdf
    • http://files.chicagoartizen.com/uploads/1/3/1/0/131070674/lebur.pdf
    • http://files.karihayter.com/uploads/1/3/2/6/132695805/popen.pdf
    • https://cdn.shopify.com/s/files/1/0434/2192/5525/files/31720366259.pdf
    • https://cdn.shopify.com/s/files/1/0437/6687/4269/files/pdf_pendidikan_agama_islam_kelas_12_kurikulum_2020_revisi_2020.pdf
    • https://cdn.shopify.com/s/files/1/0435/7183/9135/files/the_manual_w_anton.pdf
    • https://cdn.shopify.com/s/files/1/0427/6014/3014/files/3718486635.pdf
    • https://cdn.shopify.com/s/files/1/0439/1282/2939/files/a_writer_s_reference_7th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0437/7405/0458/files/arihant_all_in_one_science_class_10.pdf
    • https://cdn.shopify.com/s/files/1/0435/0545/1174/files/52192167180.pdf
    • https://cdn.shopify.com/s/files/1/0428/9508/1635/files/4825049859.pdf
    • https://cdn.shopify.com/s/files/1/0434/5397/2633/files/40278605162.pdf
    • https://cdn.shopify.com/s/files/1/0438/8726/3899/files/49365283602.pdf
    • https://cdn.shopify.com/s/files/1/0434/4253/6598/files/85152931399.pdf
    • https://cdn.shopify.com/s/files/1/0433/7133/1734/files/full_body_calisthenics_workout_plan.pdf
    • https://cdn.shopify.com/s/files/1/0433/4406/8773/files/volamukobukuvivoko.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_off00006369.bin
314c28ba3fcbe9f374679a0d8e2ef69aef5fa971137e19716564bc512fe4f6ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6369 5980 bytes
font_01_sfnt_off0000778c.bin
32bb7ed7becf7d8fd4c200e67f54fafdf748505a3b3ad7ad1240d147f9ee8060		 pdf-font-stream PDF embedded font (sfnt) at offset 0x778C 9980 bytes
font_02_sfnt_off000099f8.bin
9675d40e2df6aa8922b1ca8638c984a695e7fa6dd4dac5709d7a73e875397f84		 pdf-font-stream PDF embedded font (sfnt) at offset 0x99F8 3112 bytes

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