Malicious PDF — malware analysis report

Static analysis result for SHA-256 921fc5021ce5eddb…

MALICIOUS

PDF

44.3 KB Created: 2020-08-16 21:19:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 705e2a1a30b7bc42b5630b9327b19ee0 SHA-1: c972de21ce973a6c8fef878717d3dce9bb5daa20 SHA-256: 921fc5021ce5eddb99d1ca9c747bc2b012424995af6141aa65adf37b960d9919
120 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, including a critical link to a known malicious redirector at 'https://ttraff.cc/pify?keyword=twin+bed+sheets+at+target'. This indicates a phishing or scam attempt, likely to redirect users to malicious content. The document body, though heavily obfuscated, contains the same URL, reinforcing the malicious intent. No scripts were extracted from this sample.

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=twin+bed+sheets+at+target
    • http://domipuza.bartlettsmath.com/uploads/1/3/1/6/131607600/kiwamowowisosi-kibomofoxi-fowulegakuderir.pdf
    • http://xerazejux.deboethiopia.org/uploads/1/3/0/9/130969204/fe4682.pdf
    • http://xopovom.eatmyanim.com/uploads/1/3/1/6/131606617/pinive_fodid_bogabodux_baribalufotom.pdf
    • https://cdn.shopify.com/s/files/1/0430/6845/7122/files/63696467552.pdf
    • https://cdn.shopify.com/s/files/1/0431/5286/7494/files/68454573310.pdf
    • https://cdn.shopify.com/s/files/1/0435/5627/4339/files/85820494376.pdf
    • https://cdn.shopify.com/s/files/1/0430/8136/7712/files/xizegivogafewi.pdf
    • https://cdn.shopify.com/s/files/1/0439/8238/9406/files/daily_behavior_chart_template.pdf
    • https://cdn.shopify.com/s/files/1/0434/3844/0598/files/55027308288.pdf
    • https://cdn.shopify.com/s/files/1/0445/2777/9999/files/arduino_spaceship_interface.pdf
    • https://cdn.shopify.com/s/files/1/0428/8184/3353/files/gilelut.pdf
    • https://cdn.shopify.com/s/files/1/0429/3728/6815/files/62629116365.pdf
    • https://cdn.shopify.com/s/files/1/0433/3348/4699/files/ncert_maths_book_class_8_guide.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_off00006f3b.bin
42508f3fc52e390ac3fa0bc8ad9b2dc224463026208c96cbabe420c8d76d1f90		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F3B 5236 bytes
font_01_sfnt_off00008107.bin
7e5ad3eaa6f84328200023ea8b747060a4a6feadd0a21ecb9ba64b60b0e58f1c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8107 10372 bytes

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