Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9dde7c455c16457…

MALICIOUS

PDF

56.5 KB Created: 2020-08-31 03:51:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 68a2f1eb61da2247de373ff8bf9f0bb5 SHA-1: c35934b3e2e81b3d7855a7c1226bafb63a33ecf9 SHA-256: d9dde7c455c16457484f7f39de9e9442dae955951e031330e66a05868a6b4d3d
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, specifically pointing to `https://ttraff.com/wix?keyword=hitchhiker%2527s+guide+to+the+galaxy+meme`. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many of which point to `static.usrfiles.com` and `cdn.shopify.com`. The document body, though heavily obfuscated, also contains the primary malicious URL. This suggests the document's primary purpose is to lure the user into clicking the malicious redirector link, likely leading to further malicious content or exploitation.

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/wix?keyword=hitchhiker%2527s+guide+to+the+galaxy+meme
    • https://static.usrfiles.com/ugd/b8c837_b2a7b9e453ab42369fa6184c26b403f4.pdf
    • https://static.usrfiles.com/ugd/ac72e0_c433c49e7c624473947723a07e328539.pdf
    • https://static.usrfiles.com/ugd/2e16aa_531bcdd7e3d94c6c8ee44489c566210e.pdf
    • https://static.usrfiles.com/ugd/b8c837_c20b638aa6674bffbd0ea5704d0f8d8f.pdf
    • https://static.usrfiles.com/ugd/07625c_54552dad9a064739b2ac27f6bd6e004d.pdf
    • https://cdn.shopify.com/s/files/1/0434/0498/4474/files/japepol.pdf
    • https://cdn.shopify.com/s/files/1/0430/8788/8551/files/ensemble_empirical_mode_decomposition.pdf
    • https://cdn.shopify.com/s/files/1/0430/4257/0402/files/chemical_formula_examples.pdf
    • https://cdn.shopify.com/s/files/1/0431/6309/1112/files/xolafer.pdf
    • https://cdn.shopify.com/s/files/1/0428/8489/0790/files/teacher_evaluation_template_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0429/2440/8991/files/sazuvubukeve.pdf
    • https://cdn.shopify.com/s/files/1/0431/2373/6725/files/33706269554.pdf
    • https://cdn.shopify.com/s/files/1/0433/8191/5804/files/folic_acid_during_pregnancy.pdf
    • https://cdn.shopify.com/s/files/1/0437/8587/9713/files/apostolic_faith_mission_constitution.pdf
    • https://cdn.shopify.com/s/files/1/0430/7124/2389/files/kidatunanokada.pdf
    • https://cdn.shopify.com/s/files/1/0432/2033/6807/files/11808990626.pdf
    • https://cdn.shopify.com/s/files/1/0447/0449/7818/files/92396105766.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a41.bin
25593bf618a45234f663ae1581ad3eac19cc0ab11c6a7b450031b23a31497bbe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A41 4108 bytes
font_01_sfnt_off000078c2.bin
8c8fa709e943f9f8ac42a14e11d1c5087ca4aa04fc9a2f8b667d8b68e94bffa2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78C2 5356 bytes
font_02_sfnt_off00008b07.bin
015dd06ebf880dcd3f62dd76d1b0b2f17e661198798a1e97112d7aa786a284e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B07 10732 bytes
font_03_sfnt_off0000afab.bin
26be48b1a64ed5fda6aeb1a148265f4fe242597a9f1b53d7c1a3dbb39f87bfbe		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAFAB 16480 bytes
font_04_sfnt_off0000c5be.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC5BE 4324 bytes

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