Malicious PDF — malware analysis report

Static analysis result for SHA-256 c49fe820bf566647…

MALICIOUS

PDF

38.9 KB Created: 2020-08-20 23:45:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c13763ad12531451575feffbf26f89de SHA-1: 0bee9c687f171c40f95dd99444c3691f89035ab2 SHA-256: c49fe820bf566647b5373dde857100dc7d62fbcaac50fe79f8625198aa884f0a
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=alteryx+designer++admin'. This indicates an attempt to lure the user to a malicious site. Additionally, a PDF link farm heuristic was triggered, with 'https://cdn.shopify.com/s/files/1/0437/8935/3118/files/lolovuxo.pdf' being the first URL in this farm. The presence of a visual download button lure further supports the malicious intent of directing users to external content.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=alteryx+designer++admin
    • http://files.ithinkpet.com/uploads/1/3/0/8/130874284/gajeg.pdf
    • http://files.abbeyroadbeatles.net/uploads/1/3/2/6/132695438/9801093.pdf
    • http://ludejina.waternexusbelgium.org/uploads/1/3/1/8/131857419/dunemi.pdf
    • http://files.promechservices.co.uk/uploads/1/3/1/3/131380297/6249220.pdf
    • https://cdn.shopify.com/s/files/1/0437/8935/3118/files/lolovuxo.pdf
    • https://cdn.shopify.com/s/files/1/0433/6844/8152/files/70534228388.pdf
    • https://cdn.shopify.com/s/files/1/0431/2642/3701/files/dopenodubaxugebol.pdf
    • https://cdn.shopify.com/s/files/1/0433/7369/1045/files/zajatokizufaguwaxivaze.pdf
    • https://cdn.shopify.com/s/files/1/0428/8882/2950/files/get_input_python.pdf
    • https://cdn.shopify.com/s/files/1/0439/3458/0891/files/berlin_sights_map.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4885/files/12444409437.pdf
    • https://cdn.shopify.com/s/files/1/0429/0406/0071/files/42681619794.pdf
    • https://cdn.shopify.com/s/files/1/0440/1935/1710/files/98572743201.pdf
    • https://cdn.shopify.com/s/files/1/0427/9592/5671/files/99961791452.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_off00005b9d.bin
67eb96cef529c824e814d1c5069dc52b7cb05e6a1d6563604fc20d7a7bfa4ab5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B9D 5304 bytes
font_01_sfnt_off00006d93.bin
34e34770103a32e425eb6f7fb5c1c6bed5c39f55008d7ae6a1385b8ea85b1c98		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D93 9876 bytes

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