Malicious PDF — malware analysis report

Static analysis result for SHA-256 b615c3dab1375b19…

MALICIOUS

PDF

48.1 KB Created: 2020-07-26 10:22:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0576dd9cf6e46906beca5a1993ff39e4 SHA-1: 1169d1397d6c8866caacfa1782fc6446f2f34516 SHA-256: b615c3dab1375b1901b292d68dccf82982db82376767d70c700581561f30c453
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to external PDFs, many hosted on Shopify. The document body, though heavily obfuscated, suggests a lure related to 'intro text template after effects free', indicating a potential phishing or malware delivery attempt.

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=intro+text+template+after+effects+free
    • http://files.dorkingsnorkellingclub.org/uploads/1/3/1/4/131413718/ravijogija-wubexej-pimoguk.pdf
    • http://files.cardinalfastener.com/uploads/1/3/1/1/131163684/mififago.pdf
    • http://files.susanmaakestad.com/uploads/1/3/1/4/131437969/dd0e8675dc55.pdf
    • http://files.donaldshoney.com/uploads/1/3/0/7/130775292/7315896.pdf
    • https://cdn.shopify
    • https://cdn.shopify.com/s/files/1/0432/2046/7869/files/81214278943.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/49221060197.pdf
    • https://cdn.shopify.com/s/files/1/0431/0020/9319/files/52767726775.pdf
    • https://cdn.shopify.com/s/files/1/0433/5943/6951/files/wokoxisaduruxatov.pdf
    • https://cdn.shopify.com/s/files/1/0432/7482/9987/files/nuwixibalufomujazut.pdf
    • https://cdn.shopify.com/s/files/1/0432/2285/9943/files/rawonu.pdf
    • https://cdn.shopify.com/s/files/1/0430/0134/8255/files/dekidijemuropigelamekanu.pdf
    • https://cdn.shopify.com/s/files/1/0433/5114/6650/files/fiponidawuvirugo.pdf
    • https://cdn.shopify.com/s/files/1/0434/8765/8150/files/79923599565.pdf
    • https://cdn.shopify.com/s/files/1/0435/2029/5064/files/tinarebimenepos.pdf
    • https://cdn.shopify.com/s/files/1/0431/0391/2098/files/pexotunufaru.pdf
    • https://cdn.shopify.com/s/files/1/0434/0380/4839/files/67676916225.pdf
    • https://cdn.shopify.com/s/files/1/0440/4966/2117/files/rupobaxusonavavaxefononan.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_off0000804d.bin
4194c3eb06a67c8b3a50f2d532ba789ef9cc8090af1c67e87c8d833430754926		 pdf-font-stream PDF embedded font (sfnt) at offset 0x804D 4908 bytes
font_01_sfnt_off000090d6.bin
43a8e1fa995535292cb4a6869a39d5d34b7c87b049bf2a2057daeeba50c9544f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x90D6 10088 bytes

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