Malicious PDF — malware analysis report

Static analysis result for SHA-256 cefcc1ea255d9e40…

MALICIOUS

PDF

54.0 KB Created: 2020-08-02 21:35:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8fbffe70a9f5f8f6db020cdf3cb97bcb SHA-1: 412bb30e96e72f6af951846527b45826186a549a SHA-256: cefcc1ea255d9e40f03af83c23af047766bf9d9596e3c6d0c96704f06c4065a1
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a critical heuristic firing indicating it's a malicious redirector link, specifically pointing to 'ttraff.ru' with a keyword related to a vehicle manual. This suggests a phishing or scam attempt. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on 'cdn.shopify.com'. No scripts were extracted from this sample, but the presence of a malicious redirector URL is a strong indicator of malicious intent.

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/pify?keyword=2015+chevy+equinox+manual
    • http://files.saintsjamesandandrew.org/uploads/1/3/1/3/131383821/lesanuzemetonan_xubopigetukek.pdf
    • http://files.theclaytonconnection.com/uploads/1/3/0/8/130814169/negijirutuzekukaweru.pdf
    • http://files.artisticcounterculture.com/uploads/1/3/0/7/130740055/jadizanuxija.pdf
    • http://files.veinclinicmb.com/uploads/1/3/0/9/130969577/daranonoxaz.pdf
    • https://cdn.shopify.com/s/files/1/0429/5809/4495/files/bijinufigawejumamujevido.pdf
    • https://cdn.shopify.com/s/files/1/0432/5769/2315/files/vuvawewomuwofivaz.pdf
    • https://cdn.shopify.com/s/files/1/0432/7312/6052/files/mewerizefogukaboribas.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/luzugojozawok.pdf
    • https://cdn.shopify.com/s/files/1/0431/1931/3053/files/java_break_statement.pdf
    • https://cdn.shopify.com/s/files/1/0440/7564/7128/files/dalafi.pdf
    • https://cdn.shopify.com/s/files/1/0432/1896/0545/files/sivav.pdf
    • https://cdn.shopify.com/s/files/1/0429/8778/2297/files/82038401409.pdf
    • https://cdn.shopify.com/s/files/1/0440/9245/7112/files/12696613630.pdf
    • https://cdn.shopify.com/s/files/1/0433/8050/6785/files/17807082852.pdf
    • https://cdn.shopify.com/s/files/1/0439/1141/3912/files/38101370433.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_off00008925.bin
546e625d7d22c04c9a4e46d5b5a97b8890c8d3ff47d11d0f3c880557e1547917		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8925 5280 bytes
font_01_sfnt_off00009af2.bin
e62221a6ad276b852d5a85b792438de455ee07e20c1d92e25c4ea37b874abb50		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9AF2 10024 bytes
font_02_sfnt_off0000bd39.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBD39 4324 bytes

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