Malicious PDF — malware analysis report

Static analysis result for SHA-256 7be529b46c31e468…

MALICIOUS

PDF

40.8 KB Created: 2020-08-21 11:13:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fee83a6501254666de5dfe5222dd87a8 SHA-1: 97e448a993d527a0ee349a5e4f3e42e49729508e SHA-256: 7be529b46c31e46859692c587675e0dde9dd3e6b0d1ec9bdc356348a77cf5cf2
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a mass of external links, many of which point to potentially malicious redirectors or link farms. The primary malicious link, 'https://ttraff.cc/pify?keyword=european+union+brand+guidelines', is designed to trick users into clicking it under the guise of accessing brand guidelines. The document body, though heavily obfuscated, contains this malicious URL and numerous other PDF links, indicating a link-farming or redirection tactic.

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=european+union+brand+guidelines
    • http://files.woodyshticks.com/uploads/1/3/1/3/131379612/ritozo_luwubuvilul_bizifodoli.pdf
    • http://files.columbia-current.org/uploads/1/3/0/7/130739023/gajixatovexub.pdf
    • http://temiruna.ahbuildingservices.com/uploads/1/3/1/0/131070450/6810865.pdf
    • https://cdn.shopify.com/s/files/1/0429/4203/8182/files/fagiraziseretofopetu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gekisemegudifusoledo.pdf
    • https://cdn.shopify.com/s/files/1/0430/4112/8601/files/16421493976.pdf
    • https://cdn.shopify.com/s/files/1/0431/2347/4583/files/bonifaxuginupawi.pdf
    • https://cdn.shopify.com/s/files/1/0429/1752/7715/files/nugitukemimaxafepimavevip.pdf
    • https://cdn.shopify.com/s/files/1/0439/4385/4235/files/wheel_of_monotony_cheat.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dedijadexurusefux.pdf
    • https://cdn.shopify.com/s/files/1/0427/5883/2294/files/riffe_lake_fishing.pdf
    • https://cdn.shopify.com/s/files/1/0431/1393/9110/files/ncert_chemistry_class_11_equilibrium.pdf
    • https://cdn.shopify.com/s/files/1/0436/6640/7589/files/78933137085.pdf
    • https://cdn.shopify.com/s/files/1/0435/1541/2632/files/zesuzumib.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_off0000639f.bin
6651b13a706708fb2706f1852af2c8509bee37bfdb25d11c4b25ef2f842c21f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x639F 5224 bytes
font_01_sfnt_off00007567.bin
ed96d3a0cf27ccd967a92f1bff72d831f721b98740a7a2379f80e232616b05f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7567 9724 bytes

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