Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6a8810e23c9eabd…

MALICIOUS

PDF

54.9 KB Created: 2020-08-19 04:53:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bbad07b4ac7e6bb41e66af0c57f33ba9 SHA-1: fe91eaa269b46280f0dd2874f1e573da7c960526 SHA-256: e6a8810e23c9eabd1628968fa50d3ae4f854cbe011f81afa892e185b3a7ceae5
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised with a lure related to 'cat video songs free'. The document also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external PDF files, many hosted on Shopify. The primary malicious IOC is the ttraff.com redirector, which likely leads to further malicious content.

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.com/pify?keyword=cat+video+songs+free
    • http://files.pictonshoreexcursions.com/uploads/1/3/2/6/132681536/wabopatoxusulumitu.pdf
    • http://files.bensan.it/uploads/1/3/1/6/131637014/guliwi.pdf
    • http://files.beoilsavvy.com/uploads/1/3/0/7/130775970/2c4d2bdb0172a.pdf
    • http://files.highlandhickory.com/uploads/1/3/0/8/130814254/fozobizijutiwum.pdf
    • http://files.onefutureatatime.com/uploads/1/3/0/9/130969115/3128333.pdf
    • https://cdn.shopify.com/s/files/1/0428/2603/9463/files/19859526500.pdf
    • https://cdn.shopify.com/s/files/1/0432/7607/5164/files/open_set_in_metric_space.pdf
    • https://cdn.shopify.com/s/files/1/0434/2553/0005/files/xisij.pdf
    • https://cdn.shopify.com/s/files/1/0430/5921/6533/files/basics_of_networking_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/5866/7430/files/traduire_report_abuse_en_francais.pdf
    • https://cdn.shopify.com/s/files/1/0434/0465/6797/files/critical_reading_skills.pdf
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/7630476690.pdf
    • https://cdn.shopify.com/s/files/1/0448/3943/6449/files/tozenuvuxibinefiba.pdf
    • https://cdn.shopify.com/s/files/1/0431/1826/4469/files/69981126999.pdf
    • https://cdn.shopify.com/s/files/1/0430/8451/3429/files/zusudufikizidexuxuje.pdf
    • https://cdn.shopify.com/s/files/1/0428/3367/4396/files/9268393611.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_off00007fc7.bin
1a83b29dd2da1a45a1e1ed16bd912b6fbba65649a34299eec49594af5f94ebd5
pdf-font-stream PDF embedded font (sfnt) at offset 0x7FC7 7204 bytes
font_01_sfnt_off00009847.bin
84f15b9d7c5f99a261bd1fcfb16c1555413fbe86252542b9bbb9918bbc00415f
pdf-font-stream PDF embedded font (sfnt) at offset 0x9847 5008 bytes
font_02_sfnt_off0000a968.bin
0f2c7707e87c5b7b6dc1944a859ec2e41f9d19a5032ed653b6865d8d2e8a7f35
pdf-font-stream PDF embedded font (sfnt) at offset 0xA968 11100 bytes