Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7933548de6f1b09…

MALICIOUS

PDF

42.7 KB Created: 2020-08-11 18:55:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ce5ad2366a48408d9415c0a5b2c19e2 SHA-1: ac87585815c7fdebcd62aa9e790ebcdd445f2dbe SHA-256: e7933548de6f1b0926a6f854104dce36cc5b3d1557334cda50bc5c507739d6e1
120 Risk Score

Malware Insights

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

The PDF file was flagged for containing a malicious redirector link and a large number of external links, suggesting a link farm or phishing attempt. The primary malicious URL identified is https://ttraff.cc/pify?keyword=br%25C3%25BCche+erkl%25C3%25A4ren+pdf, which likely serves as a gateway to further malicious content. The document body contains garbled text and embedded URLs, reinforcing the malicious intent.

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=br%25C3%25BCche+erkl%25C3%25A4ren+pdf
    • http://files.skintwalletsusa.com/uploads/1/3/1/3/131398188/2972823.pdf
    • http://files.barbarasretreat.us/uploads/1/3/0/8/130813736/177ac548d7625.pdf
    • http://files.michaelhelquist.com/uploads/1/3/0/8/130873840/8e91918029.pdf
    • https://cdn.shopify.com/s/files/1/0432/3262/4808/files/4946074244.pdf
    • https://cdn.shopify.com/s/files/1/0431/6725/2641/files/zuwizuvowivujufikezozew.pdf
    • https://cdn.shopify.com/s/files/1/0431/5322/7936/files/roduvugunebi.pdf
    • https://cdn.shopify.com/s/files/1/0435/5037/6100/files/82849818265.pdf
    • https://cdn.shopify.com/s/files/1/0431/2530/9604/files/5655718367.pdf
    • https://cdn.shopify.com/s/files/1/0440/2321/8341/files/applebee_s_menu_nutrition.pdf
    • https://cdn.shopify.com/s/files/1/0431/5214/6587/files/44061498208.pdf
    • https://cdn.shopify.com/s/files/1/0432/2200/7969/files/who_breastfeeding_recommendations.pdf
    • https://cdn.shopify.com/s/files/1/0434/0360/8214/files/business_model_generation_osterwalder.pdf
    • https://cdn.shopify.com/s/files/1/0433/1818/2041/files/77733749272.pdf
    • https://cdn.shopify.com/s/files/1/0434/7078/2614/files/contraception_types.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_off00006602.bin
774092e2e2810ba5e7d9e6121d4b11dc0ca30580fe45d29f8e25a8d1bbc49d5e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6602 5324 bytes
font_01_sfnt_off000077dc.bin
96ee1654570ada577c96ae76e6c9041c784b7c74817c1215bd615042fdf0166c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77DC 11184 bytes

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