Malicious PDF — malware analysis report

Static analysis result for SHA-256 97c5035229340e75…

MALICIOUS

PDF

43.3 KB Created: 2020-08-01 06:05:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bcbaeff031fba8c4973fdfc9e2c5f5d5 SHA-1: debfae6009153330875ce80ed4eddaa5049f1f35 SHA-256: 97c5035229340e75ce8c58f0e7d282b0743c548cc511bedeb77df2b3c9946a22
150 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised as a guide for uninstalling MySQL on Mac. This suggests a social engineering tactic to trick users into clicking the link. The document also contains a large number of external PDF links, many hosted on Shopify, which is characteristic of SEO link farm abuse. No scripts were extracted from this sample.

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=how+to+uninstall+mysql+on+mac
    • http://files.livinglegendsbaseball.com/uploads/1/3/1/3/131380895/5809ec3389c61d0.pdf
    • http://files.wwwwilsonsconsultancy.com/uploads/1/3/2/7/132712451/2014226.pdf
    • http://files.nocaglassschool.com/uploads/1/3/0/7/130776072/3576566.pdf
    • http://files.lightflightstudios.com/uploads/1/3/2/3/132303117/108630.pdf
    • http://files.cjsquaredphotography.com/uploads/1/3/0/8/130814353/b873332d2f17115.pdf
    • https://cdn.shopify.com/s/files/1/0434/1415/9521/files/36674046413.pdf
    • https://cdn.shopify.com/s/files/1/0432/2315/4847/files/zimudusezegazewu.pdf
    • https://cdn.shopify.com/s/files/1/0431/2386/7805/files/81627273500.pdf
    • https://cdn.shopify.com/s/files/1/0434/3873/5512/files/simerifire.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/9467339244.pdf
    • https://cdn.shopify.com/s/files/1/0429/1405/4300/files/bivux.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mejiwevabefi.pdf
    • https://cdn.shopify.com/s/files/1/0433/7578/8184/files/janepanavoraxug.pdf
    • https://cdn.shopify.com/s/files/1/0429/0058/6649/files/kibotoluwiwopadutemil.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bivunamu.pdf
    • https://cdn.shopify.com/s/files/1/0431/7016/8986/files/keretexeta.pdf
    • https://cdn.shopify.com/s/files/1/0435/3848/1311/files/vudojome.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_off00006c8b.bin
e256749baa1518d20d9bb2f03fcb2901d34a5810915733169f478f84cd58866c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C8B 5132 bytes
font_01_sfnt_off00007e09.bin
a8fde5e69d232aaba75eb53a3c603144b19e384f1706cc4c9ab8c3821add9039		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E09 10000 bytes

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