Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b04bed36ee2f947…

MALICIOUS

PDF

38.0 KB Created: 2020-08-02 14:40:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: be295ec1f0a23200a6ec84508b25324d SHA-1: 91fff64a4d97439ede58492d52236888cfb006ac SHA-256: 2b04bed36ee2f94732874d75616f1cce77cd3b3eef8a6744a0225cb5a0cc0953
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, specifically pointing to 'https://ttraff.cc/pify?keyword=american+pie+watch+online'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on shopify.com. The document body, though heavily obfuscated, contains the same malicious URL, reinforcing the lure. The primary attack pattern involves directing the user to a malicious site under the guise of entertainment.

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.cc/pify?keyword=american+pie+watch+online
    • http://files.wallingtonanimalrescue.com/uploads/1/3/1/1/131164556/5388895.pdf
    • http://files.e360microwave.com/uploads/1/3/1/4/131406060/robibel_sirofiwugilikiv_jakalonajad_megodod.pdf
    • http://files.chalkplumbingsuppliesuk.co.uk/uploads/1/3/2/6/132682882/fixupadugowazoz_simobar.pdf
    • https://cdn.shopify.com/s/files/1/0434/6924/2534/files/rufosikipodigiwororelup.pdf
    • https://cdn.shopify.com/s/files/1/0431/4054/6721/files/49498651545.pdf
    • https://cdn.shopify.com/s/files/1/0431/5149/1236/files/93436145562.pdf
    • https://cdn.shopify.com/s/files/1/0433/2814/3510/files/dobefowiluxo.pdf
    • https://cdn.shopify.com/s/files/1/0427/7560/9510/files/wijebesuzoko.pdf
    • https://cdn.shopify.com/s/files/1/0427/9776/0668/files/palokasekew.pdf
    • https://cdn.shopify.com/s/files/1/0434/9971/6770/files/pifafam.pdf
    • https://cdn.shopify.com/s/files/1/0427/7318/4678/files/ruwosozobatun.pdf
    • https://cdn.shopify.com/s/files/1/0434/1760/0152/files/11019740086.pdf
    • https://cdn.shopify.com/s/files/1/0429/1490/6275/files/skate_3_rpcs3_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/4939/4080/files/49200203304.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_off000057aa.bin
a902edc6f76fc37759f2991d86fbe456e3a4119f8e37c3319c0409f19ad1440d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57AA 5076 bytes
font_01_sfnt_off000068d1.bin
379891e58c2af3bc1e12abf3b1ba1c293378f8baff5bd86a31c13c1d230381e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68D1 10136 bytes

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