Malicious PDF — malware analysis report

Static analysis result for SHA-256 4286b60d4607802e…

MALICIOUS

PDF

43.0 KB Created: 2020-07-30 03:15:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b58839d372811aaa83ef7453bc4d002b SHA-1: c2129e9b9b22fa43e8dd88a1ca1a46f800832847 SHA-256: 4286b60d4607802e5386c3236a14241f04d14417c28f08421bc2d300d3939b78
150 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The ML classifier also strongly flagged this PDF as malicious. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to phishing sites or download further malware.

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=as+is+analysis+pdf
    • http://files.hollyberrycatering.com/uploads/1/3/0/7/130775341/115519.pdf
    • http://files.craftingwithapril.co/uploads/1/3/1/4/131453056/fe7f7fbd4bc.pdf
    • http://files.ericheerspinkceramics.com/uploads/1/3/2/7/132710756/6420206.pdf
    • http://files.bootsnrootsfarm.com/uploads/1/3/1/4/131438741/kebaxikif-xefonejipo-rexafewilekul-gapinekuzumum.pdf
    • http://files.nottinghammassage.com/uploads/1/3/1/3/131384306/3073693.pdf
    • http://files.cr
    • https://cdn.shopify.com/s/files/1/0433/7709/8913/files/21161771866.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/21800621301.pdf
    • https://cdn.shopify.com/s/files/1/0434/4738/6264/files/37665659616.pdf
    • https://cdn.shopify.com/s/files/1/0431/1760/9122/files/dituguvagidodagasakadubil.pdf
    • https://cdn.shopify.com/s/files/1/0432/0886/8001/files/xazufax.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/37604868145.pdf
    • https://cdn.shopify.com/s/files/1/0431/4628/1122/files/natovifijatitadoriz.pdf
    • https://cdn.shopify.com/s/files/1/0429/2955/3575/files/78024572856.pdf
    • https://cdn.shopify.com/s/files/1/0432/2174/5823/files/tigafewavudum.pdf
    • https://cdn.shopify.com/s/files/1/0436/2086/0067/files/dumoxafimakitofoxupuge.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_off00006e7f.bin
4ccb473521342966fc9ae8e474889d9f9741c2e68da54fd924946d863361ecbe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E7F 4512 bytes
font_01_sfnt_off00007dcf.bin
974dd168cc4cf6ff40438cbcd01e4874abe0e5bebcd8d0053bf8b97016b023c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DCF 9756 bytes

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