Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0ec397447955021…

MALICIOUS

PDF

46.7 KB Created: 2020-08-14 05:26:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 83c710d1c98bea9532cbb0fd4fc3d146 SHA-1: 37a445f0322793b44f256804e4e4d23ef676c631 SHA-256: a0ec39744795502178b48f96d0c9ac1faa8a0f57b043101ba400c5d7e95f67e0
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=manualidades+para+navidad+paso+a+paso+faciles'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many of which point to Shopify domains hosting PDF files. The document body, though heavily obfuscated, contains the same redirector URL. This suggests the primary goal is to redirect the user to malicious infrastructure, likely for phishing or malware delivery.

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/pify?keyword=manualidades+para+navidad+paso+a+paso+faciles
    • http://xudax.shedofbooks.com/uploads/1/3/1/6/131607600/4c082d642887.pdf
    • http://files.superiorvisionaryevents.com/uploads/1/3/1/4/131452958/2838066.pdf
    • http://files.smyrnafoundation.com/uploads/1/3/1/1/131163613/ac256f1.pdf
    • https://cdn.shopify.com/s/files/1/0431/1249/7312/files/livro_tica_e_meio_ambiente.pdf
    • https://cdn.shopify.com/s/files/1/0429/6635/2025/files/119061386.pdf
    • https://cdn.shopify.com/s/files/1/0431/7465/8216/files/lunijomozesomuj.pdf
    • https://cdn.shopify.com/s/files/1/0440/8338/0376/files/80123355951.pdf
    • https://cdn.shopify.com/s/files/1/0429/8866/7039/files/sanafapofi.pdf
    • https://cdn.shopify.com/s/files/1/0432/5664/3739/files/58410491336.pdf
    • https://cdn.shopify.com/s/files/1/0431/6381/2002/files/certified_ethical_hacker_syllabus.pdf
    • https://cdn.shopify.com/s/files/1/0445/4517/9807/files/lg_flash_tool_1._8_crack.pdf
    • https://cdn.shopify.com/s/files/1/0448/9238/9531/files/allan_quatermain_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/3173/2132/files/bajorapinobexanojotan.pdf
    • https://cdn.shopify.com/s/files/1/0444/7302/4679/files/english_speaking_basics_notes.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_off00007647.bin
be4632c0f34c4d06808a0868f3a3b15595aec4b4ff5c53b3f7d2b94c00b74e8d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7647 5212 bytes
font_01_sfnt_off0000881f.bin
7a59e02f57aad9169b079167721576cf8732963db887325f0a096ddeb90bd037		 pdf-font-stream PDF embedded font (sfnt) at offset 0x881F 10908 bytes

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