Malicious PDF — malware analysis report

Static analysis result for SHA-256 d58d8086e4fa1522…

MALICIOUS

PDF

45.2 KB Created: 2020-08-31 08:40:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 012b0355c406105001997ee60e57e1c5 SHA-1: 0ca036c2e68f0880b5e5103fe174047ed11f531c SHA-256: d58d8086e4fa15223ffe12d80a3f8d2e03621d96d9b3428d6a91b3065c19c668
150 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a large link farm. The primary malicious URL identified is https://ttraff.cc/wix?keyword=personality+psychology+larsen+5th+ed, which likely serves as a gateway to further malicious content. The document body, though heavily obfuscated, contains references to this URL and numerous other Shopify-hosted PDF files, suggesting a coordinated SEO-based link farm strategy.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/wix?keyword=personality+psychology+larsen+5th+ed
    • https://cdn.shopify.com/s/files/1/0430/4997/5961/files/terraform_aws_client_vpn_example.pdf
    • https://cdn.shopify.com/s/files/1/0429/8529/1937/files/38366132111.pdf
    • https://cdn.shopify.com/s/files/1/0434/6085/3912/files/77957763536.pdf
    • https://cdn.shopify.com/s/files/1/0432/6329/5650/files/jar_of_hearts_piano_chord.pdf
    • https://static.usrfiles.com/ugd/b8c837_582e8594b21e426ab2e43ed936f35e88.pdf
    • https://static.usrfiles.com/ugd/e745be_f18d845052444f7d907f521beafe046c.pdf
    • https://static.usrfiles.com/ugd/b8c837_7ea740ec6fee41138c0288dc9855f91c.pdf
    • https://static.usrfiles.com/ugd/b8c837_394a5068d7e449e1b1c9c88527e82da4.pdf
    • https://static.usrfiles.com/ugd/b8c837_151d0201c8e44307b452a5ebf81ff981.pdf
    • https://cdn.shopify.com/s/files/1/0433/5730/7039/files/mythical_creatures_mod_1._7_10.pdf
    • https://cdn.shopify.com/s/files/1/0428/5821/7631/files/11346396796.pdf
    • https://cdn.shopify.com/s/files/1/0427/6974/4028/files/angular2_checkbox_reactive_forms.pdf
    • https://cdn.shopify.com/s/files/1/0437/6710/3645/files/kipururonepe.pdf
    • https://cdn.shopify.com/s/files/1/0434/3355/8168/files/jufelekirologepakuwuk.pdf
    • https://static.usrfiles.com/ugd/c0b427_483a017aea974218a26b63d3293a1f77.pdf
    • https://static.usrfiles.com/ugd/b8c837_6b79d63e399a48019d26b6236fc95a87.pdf
    • https://static.usrfiles.com/ugd/b8c837_9977ce3c087b4c299ea0255220b1c1a2.pdf
    • https://static.usrfiles.com/ugd/625844_6a737acd360f4e44bb74318788c3ba47.pdf
    • https://static.usrfiles.com/ugd/36f25b_3cfb07649033424e93105e72001370d0.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000066d6.bin
f37d1ef8c9e5e2c0aa4806624ac824e849dabe5832eb98c48e968374a85daafa
pdf-font-stream PDF embedded font (sfnt) at offset 0x66D6 5348 bytes
font_01_sfnt_off000078f9.bin
892564e7dae8f3fb0245f9c5113209f44f2b46d1f020f8a3e4c61bde965c5b8c
pdf-font-stream PDF embedded font (sfnt) at offset 0x78F9 9488 bytes
font_02_sfnt_off0000996b.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x996B 4324 bytes