Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6a82df7254c344b…

MALICIOUS

PDF

41.4 KB Created: 2020-08-06 21:41:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7758cb22a728671706734dde048f518f SHA-1: 17a7c36adb4f0d4217e6422de748b98031f6181e SHA-256: e6a82df7254c344b9f1fd747481c191a276f3c69efbdc0b4083e575200db012b
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external resources. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure, specifically 'https://ttraff.ru/pify?keyword=angle+bisector+practice+pdf'. Another critical heuristic identifies this as a PDF link farm, with numerous links pointing to shopify.com and other domains, suggesting an attempt to manipulate search engine results or distribute malicious content. The document body is heavily obfuscated and contains the malicious URL, further supporting the attack pattern.

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=angle+bisector+practice+pdf
    • http://files.martincashsculpture.com/uploads/1/3/0/7/130740625/05eebfab3b.pdf
    • http://wusabe.multimediocrityshow.com/uploads/1/3/0/7/130740178/1660626.pdf
    • http://files.chelseafarmersmarket.org/uploads/1/3/1/4/131437174/liveribijexezanoxaz.pdf
    • https://cdn.shopify.com/s/files/1/0432/9072/2469/files/hollywood_movies_2016_in_hindi_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0436/8482/3205/files/rozeviwanaviret.pdf
    • https://cdn.shopify.com/s/files/1/0435/7400/1825/files/fufogamorakofat.pdf
    • https://cdn.shopify.com/s/files/1/0434/2900/3416/files/57019755772.pdf
    • https://cdn.shopify.com/s/files/1/0433/8499/5991/files/66209259838.pdf
    • https://cdn.shopify.com/s/files/1/0434/0436/1884/files/badofosawijewipeniwurodi.pdf
    • https://cdn.shopify.com/s/files/1/0432/2174/5825/files/tasilivelalosir.pdf
    • https://cdn.shopify.com/s/files/1/0427/7148/0742/files/201823564.pdf
    • https://cdn.shopify.com/s/files/1/0435/4772/1892/files/jomufuzatiwodet.pdf
    • https://cdn.shopify.com/s/files/1/0433/5996/1239/files/twelve_ordinary_men.pdf
    • https://cdn.shopify.com/s/files/1/0433/9299/1399/files/sofel.pdf
    • https://cdn.shopify.com/s/files/1/0432/7243/7910/files/mathematical_analysis_business_and_economic_applications.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004bbb.bin
e4774d32b4e6320dd64e9c2f62d16df4e1f21033d6c43f78323799db72e9a6da
pdf-font-stream PDF embedded font (sfnt) at offset 0x4BBB 5452 bytes
font_01_sfnt_off00005e4f.bin
b1d67376b6e95b84d4bdf36eaa84533395845d2c873ac8b6f9b5b5f864543a0a
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E4F 10244 bytes
font_02_sfnt_off00008175.bin
1699b851eb1a1ea11a62cec862b2313548363d7132d51ce2826ada84bf41a2f0
pdf-font-stream PDF embedded font (sfnt) at offset 0x8175 16216 bytes