Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0f4408ef9683d7e…

MALICIOUS

PDF

47.9 KB Created: 2020-08-03 20:37:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b40446d379a6dc59ddec95a9bde918f0 SHA-1: 1e2da42777415119847acd390e3e5aecf5a1d39b SHA-256: d0f4408ef9683d7e781369d8d06ba95573319582cf7c83c0b3f81533b966290d
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL is https://ttraff.cc/pify?keyword=shake+hands+with+the+devil+book+pdf, which is likely used to redirect users to a malicious site. The document body, though heavily obfuscated, contains references to the book title and the malicious URL, reinforcing the lure. The presence of many Shopify links suggests a link farm used for SEO poisoning to attract victims.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=shake+hands+with+the+devil+book+pdf
    • http://files.groverclevelandhs.com/uploads/1/3/0/7/130739777/zudanesabofugos.pdf
    • http://files.cuppycakesa.com/uploads/1/3/1/3/131381919/xifowub.pdf
    • http://files.breadoflifelynchburg.com/uploads/1/3/1/3/131398221/peneg.pdf
    • http://files.thesilvergen.com/uploads/1/3/1/4/131406843/c7722f9f97555.pdf
    • https://cdn.shopify.com/s/files/1/0448/9786/1787/files/hindu_girl_name_list_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/3588/5725/files/susuretowofufozasuxo.pdf
    • https://cdn.shopify.com/s/files/1/0433/7614/8638/files/72427470500.pdf
    • https://cdn.shopify.com/s/files/1/0430/3113/4365/files/sipotirimajirajivobolip.pdf
    • https://cdn.shopify.com/s/files/1/0440/8446/1720/files/68366180405.pdf
    • https://cdn.shopify.com/s/files/1/0428/6945/7055/files/watijibaxaniber.pdf
    • https://cdn.shopify.com/s/files/1/0438/1242/1789/files/html_state_dropdown.pdf
    • https://cdn.shopify.com/s/files/1/0429/9636/7511/files/1775034367.pdf
    • https://cdn.shopify.com/s/files/1/0432/7079/9516/files/fefifefotat.pdf
    • https://cdn.shopify.com/s/files/1/0428/3056/1436/files/48154675178.pdf
    • https://cdn.shopify.com/s/files/1/0429/3269/9302/files/giweme.pdf
    • https://cdn.shopify.com/s/files/1/0430/9676/8665/files/55403646297.pdf
    • https://cdn.shopify.com/s/files/1/0431/7754/1787/files/4297846126.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_off00007d1e.bin
d39e52ec1df6c967f437ab1fc4743d995607ccfa96c935fc3ab8b12be0c08baf
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D1E 5492 bytes
font_01_sfnt_off00008fe1.bin
a1b2be9f726b862ce6bfc286488c264f7e5903f7035369685b0c01efa43d7b57
pdf-font-stream PDF embedded font (sfnt) at offset 0x8FE1 10264 bytes