Malicious PDF — malware analysis report

Static analysis result for SHA-256 c684ba0110dbcc91…

MALICIOUS

PDF

40.5 KB Created: 2020-08-30 07:31:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 759f04b6167beb33e8a4f9bbeb4a4398 SHA-1: 84238499c9fc1d0036bfecd0b8b498d7670d498f SHA-256: c684ba0110dbcc9146225d524fa334ae7fbb145198eb97b9e977ec1f8fab1b93
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, many of which point to a link farm hosted on Shopify. One of these links, found in the document body, redirects to `ttraff.ru`, which is flagged as malicious. This suggests a social engineering attack aiming to redirect users to harmful 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.ru/wix?keyword=atomic+theory+history+worksheet
    • https://cdn.shopify.com/s/files/1/0433/9639/9265/files/zofopolinobidaruredunima.pdf
    • https://cdn.shopify.com/s/files/1/0461/4717/4563/files/amphipod_hydraform_jett-_lite_handheld_20_oz.pdf
    • https://cdn.shopify.com/s/files/1/0433/0877/7637/files/7712163257.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tanedikefiresemur.pdf
    • https://static.usrfiles.com/ugd/16a96a_14cac5a5816f44f78883024ac46eecfd.pdf
    • https://static.usrfiles.com/ugd/f3ecbe_a8c22c68863e421f977b46570b188966.pdf
    • https://static.usrfiles.com/ugd/1fbf8b_854675a435244fb9aa7ee51691f33409.pdf
    • https://static.usrfiles.com/ugd/b8c837_2c5c661847a24ede85af15664830ebeb.pdf
    • https://static.usrfiles.com/ugd/b8c837_6c266b54b4b447ba8891eae0752843d8.pdf
    • https://static.usrfiles.com/ugd/432b07_7e533a026999452a8d409320317a5582.pdf
    • https://static.usrfiles.com/ugd/e4a001_3186897e62d6428cbff80ce8201fa956.pdf
    • https://cdn.shopify.com/s/files/1/0430/7383/1066/files/27446113263.pdf
    • https://cdn.shopify.com/s/files/1/0431/4211/9592/files/laura_pausini_la_solitude.pdf
    • https://cdn.shopify.com/s/files/1/0436/3105/0915/files/most_valuable_antique_bottles.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_off00006098.bin
be6024d8f37205ac486e701d59a1c4fabb1ca5a7d7312992a1c0776567dbb00e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6098 5044 bytes
font_01_sfnt_off000071b7.bin
5e67f0bffbd91e4fc7fc0a0e5a39b32430f8e5e1f6babf5e47cdc0b5b3ca13ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71B7 10380 bytes

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