Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc4ddc10f8ff19ac…

MALICIOUS

PDF

47.3 KB Created: 2020-08-30 09:00:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3eb1104fe245c2c357253bec2e703f48 SHA-1: d60b39aaf8966a082a17021bf4117d933f5d83f9 SHA-256: bc4ddc10f8ff19ac938bc95aced687397019ba046d13247cec769900e3da3530
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with one specifically identified as a malicious redirector. This suggests the document is designed to lead users to malicious websites. The presence of numerous links, many hosted on Shopify, indicates a potential SEO poisoning or link farm tactic to distribute malicious content. 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.com/wix?keyword=music+appreciation+crossword+puzzles
    • https://cdn.shopify.com/s/files/1/0428/0814/8127/files/61612114724.pdf
    • https://cdn.shopify.com/s/files/1/0430/9018/2304/files/gitomaj.pdf
    • https://cdn.shopify.com/s/files/1/0428/4134/2108/files/17648053817.pdf
    • https://static.usrfiles.com/ugd/5360f8_a9a1e27b718547f9bcd3c56ec2c4f7d1.pdf
    • https://static.usrfiles.com/ugd/b8c837_af10a04a980c4568ba22dc6c15a8475b.pdf
    • https://static.usrfiles.com/ugd/b8c837_c4a1241efb154e09aea32844d3733e53.pdf
    • https://cdn.shopify.com/s/files/1/0436/8472/4889/files/blest_be_the_lord_chords.pdf
    • https://cdn.shopify.com/s/files/1/0435/9425/2456/files/50216981870.pdf
    • https://cdn.shopify.com/s/files/1/0430/8212/1377/files/sobosokimopagawupokefu.pdf
    • https://cdn.shopify.com/s/files/1/0431/0351/8882/files/tutorial_opencv_python.pdf
    • https://cdn.shopify.com/s/files/1/0434/3595/0241/files/internet_explorer_9_android_apk.pdf
    • https://cdn.shopify.com/s/files/1/0435/1403/6376/files/43292923111.pdf
    • https://cdn.shopify.com/s/files/1/0433/5609/4615/files/wrong_turn_7_full_movie_mp4.pdf
    • https://cdn.shopify.com/s/files/1/0429/6946/4991/files/watinuf.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_off00007997.bin
7efcc11749837718ecfe64f238b9e09096e261330a1b681191ce801d9e54751e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7997 5212 bytes
font_01_sfnt_off00008b83.bin
d829ca51173dcc063a4746f27402b7ba1f7e00b9c6b8c91852c8a917afcf745e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B83 10760 bytes

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