Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad69af2f5044cbf5…

MALICIOUS

PDF

60.0 KB Created: 2020-08-19 22:00:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8212b624e3c4f5d0c822d3e5096f2a98 SHA-1: 5aa067e32560cb62405e1a31543e08f6ca420d6b SHA-256: ad69af2f5044cbf5c2653fbc09de64fcc3cd446a922519714a6ae8121c74cda2
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.com/pify?keyword=agnisakshi+telugu+serial+audio+song+free'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. Additionally, a PDF link farm heuristic suggests the document is part of a larger SEO poisoning effort to distribute malicious PDFs. No scripts were extracted, and the document body is heavily obfuscated, but the presence of the malicious redirector is sufficient evidence for the attack pattern.

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=agnisakshi+telugu+serial+audio+song+free
    • http://xizex.deweywebster.net/uploads/1/3/1/8/131856158/7994563.pdf
    • http://lezodi.humanitypr.com/uploads/1/3/0/8/130813420/5786838.pdf
    • http://files.maxjet.org/uploads/1/3/1/6/131637021/mirukufedus_guderori_sibimalegewas.pdf
    • http://files.lightonwatertcm.com/uploads/1/3/1/4/131437862/sutodew.pdf
    • http://parevut.tanyagrahamart.com/uploads/1/3/2/3/132303338/sewita.pdf
    • https://cdn.shopify.com/s/files/1/0429/2198/4166/files/career_path_finder_chart_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/3328/8088/files/cardiospermum_halicacabum.pdf
    • https://cdn.shopify.com/s/files/1/0434/3595/0241/files/basic_and_bedside_electrocardiography_ting_vit.pdf
    • https://cdn.shopify.com/s/files/1/0428/5959/3894/files/wosiwoto.pdf
    • https://cdn.shopify.com/s/files/1/0432/4481/4500/files/gurenikuwu.pdf
    • https://cdn.shopify.com/s/files/1/0434/2281/0263/files/17679572867.pdf
    • https://cdn.shopify.com/s/files/1/0432/1024/4256/files/lafujixewetubifebatogoraw.pdf
    • https://cdn.shopify.com/s/files/1/0436/3013/3406/files/37001640470.pdf
    • https://cdn.shopify.com/s/files/1/0433/7470/6853/files/nisafekanekeruxema.pdf
    • https://cdn.shopify.com/s/files/1/0435/9811/9071/files/xorero.pdf
    • https://cdn.shopify.com/s/files/1/0433/9164/7894/files/malidelakezejugin.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 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000053ff.bin
49084f695d4cb80e43218bcaa5e0085c20f4145fa3c69a09fc6c3868caebe4e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53FF 5220 bytes
font_01_sfnt_off000065b9.bin
46535e8ee864aea3e69ef29061758d996990510399d7237650bc316237ef78f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65B9 2192 bytes
font_02_sfnt_off00006fe6.bin
8c5cf8a0ca4f4ea27f7bb7f4e3facfa8e1a4a3b7dbb8cfcafd45b6d66bae24bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FE6 20472 bytes
font_03_sfnt_off00009f45.bin
614ed29908490b2cf6eaaca9d0091e1e84029f876ebc83a1b5e4ffadee7cd41d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F45 1864 bytes
font_04_sfnt_off0000a853.bin
554c93299f171a2d6ecbd8af616d37ad6e34547c430c306c52ae990ac7c7d660		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA853 10020 bytes
font_05_sfnt_off0000cadf.bin
569d3f96ef761b7981f59faf56326dead3ff91195e0a53bc74a64100e740c7ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCADF 16548 bytes

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