Malicious PDF — malware analysis report

Static analysis result for SHA-256 f03a0319e2e227b8…

MALICIOUS

PDF

47.5 KB Created: 2020-08-31 21:06:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 49e48047df3a02230c1cf53a6e5cae21 SHA-1: c8daeec75f9b83da41ceab0412a2ef91d4c7f66c SHA-256: f03a0319e2e227b8cd6b4878010792d2298eaf80e5973c292ff98b7d8bf939e4
120 Risk Score

Malware Insights

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

The PDF file contains embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains the text 'Lovely good night image' and a URL that matches the malicious redirector. This suggests the document's primary purpose is to trick users into visiting the malicious URL, likely leading to further compromise.

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/wix?keyword=lovely+good+night+image
    • https://cdn.shopify.com/s/files/1/0466/6494/1733/files/82843318316.pdf
    • https://cdn.shopify.com/s/files/1/0430/3811/3955/files/95699007250.pdf
    • https://cdn.shopify.com/s/files/1/0433/5452/1758/files/exponent_practice_worksheet_5th_grade.pdf
    • https://static.usrfiles.com/ugd/4dd980_d3af3c835e6146ec836a3d83c761f5c8.pdf
    • https://static.usrfiles.com/ugd/b8c837_5f3315c5e7464f1bb0f3d6fda657370a.pdf
    • https://static.usrfiles.com/ugd/b8c837_6a0a10997d3745ed997e57cab4ea23bf.pdf
    • https://cdn.shopify.com/s/files/1/0428/5300/7516/files/rejisasozopoliwipireg.pdf
    • https://cdn.shopify.com/s/files/1/0427/6482/8838/files/65252969758.pdf
    • https://cdn.shopify.com/s/files/1/0432/5136/8104/files/welenivoredatu.pdf
    • https://cdn.shopify.com/s/files/1/0432/6889/8976/files/best_free_altimeter_app_android.pdf
    • https://cdn.shopify.com/s/files/1/0427/8288/4006/files/55471474198.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/
    • https://cdn.shopify.com/s/files/1/0433/5452/1758/files/expo

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000711f.bin
4a92c4d3231fc0b99f9fe9281ffe820d1334a945bc56b68c3eea9f531ecbf9d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x711F 5068 bytes
font_01_sfnt_off00008247.bin
8cd9b353d25f0ff19e402f9a6e8f3ba88abb735d2bf42353741c2cb833f125c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8247 9220 bytes
font_02_sfnt_off0000a201.bin
23195fa80137288405add679a8ddf1ef6050569a056224b663844e5dfb0f3ad4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA201 3924 bytes

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