Malicious PDF — malware analysis report

Static analysis result for SHA-256 d01d0108531a8d5c…

MALICIOUS

PDF

43.2 KB Created: 2020-08-01 03:18:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 55570eecfbed990af80e92de79db3a6d SHA-1: c7f17d407b7a133cacfbc535ef64dd8451fba0fd SHA-256: d01d0108531a8d5c830855c9b97997b544fdde92e85d96eb30c6a4782bfa6380
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a malicious redirector at 'https://ttraff.cc/pify?keyword=a+grief+observed+pdf'. Another critical heuristic indicates a link farm structure, with many links pointing to Shopify domains, likely to obscure the malicious intent. The document body contains garbled text but includes the malicious URL, suggesting a lure to download a PDF which redirects to malicious content.

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=a+grief+observed+pdf
    • http://files.sbcopywriting.com/uploads/1/3/2/7/132740218/644292.pdf
    • http://files.springdalesva.com/uploads/1/3/0/7/130738725/75683bd39ba.pdf
    • http://files.alyssasinenitarot.com/uploads/1/3/0/7/130776267/dedff978dc6.pdf
    • https://cdn.shopify.com/s/files/1/0428/3600/0931/files/siwutona.pdf
    • https://cdn.shopify.com/s/files/1/0431/6450/0122/files/93825775317.pdf
    • https://cdn.shopify.com/s/files/1/0433/8984/5671/files/17489954958.pdf
    • https://cdn.shopify.com/s/files/1/0429/8909/3018/files/sowikafevozu.pdf
    • https://cdn.shopify.com/s/files/1/0428/2528/5791/files/99350243196.pdf
    • https://cdn.shopify.com/s/files/1/0431/5843/8039/files/changing_pdf_text_color.pdf
    • https://cdn.shopify.com/s/files/1/0427/8799/5814/files/44090692124.pdf
    • https://cdn.shopify.com/s/files/1/0434/6498/2693/files/35092176924.pdf
    • https://cdn.shopify.com/s/files/1/0431/0489/5143/files/77318204107.pdf
    • https://cdn.shopify.com/s/files/1/0433/9813/5966/files/foxepoliveji.pdf
    • https://cdn.shopify.com/s/files/1/0432/1814/1347/files/86480699960.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/58097506778.pdf
    • https://cdn.shopify.com/s/files/1/0432/5595/5613/files/milinebenetejenonu.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_off00006c23.bin
d38cf929ff2a77164b837107c013258a6218840db40cca679550e41b5af7f83f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C23 5156 bytes
font_01_sfnt_off00007dc9.bin
a4856995972997b97bba8bac5341669503343388e18e867ff6e017e12e7d35a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DC9 10060 bytes

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