Malicious PDF — malware analysis report

Static analysis result for SHA-256 e301dd446a227d7c…

MALICIOUS

PDF

60.2 KB Created: 2020-10-06 12:51:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bfbf346488e049f1abbb7419f77dca62 SHA-1: 59b15e4c51d98fb1fc7b119e4214c07740de6aab SHA-256: e301dd446a227d7ce002d4a45778da3e26c2c4819700ba9bdd0f6268068b9d6a
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to domains associated with link farms and redirectors. One critical heuristic firing indicates a direct link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains references to the URLs, suggesting the primary purpose is to lure users into clicking these links. 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://cctraff.ru/pify?keyword=abbott+and+costello+radio+show
    • http://bowopivu.edmotivate.com/uploads/1/3/1/6/131637309/6198845.pdf
    • http://files.ccscatu.org/uploads/1/3/0/7/130775677/jowenejinuze-nujibo-belokokana.pdf
    • http://nuwuxa.inthemakingtremp.com/uploads/1/3/0/7/130739561/d0b952d8c7b44f9.pdf
    • http://files.poorwarren.com/uploads/1/3/1/3/131383917/ac3cd133bcb.pdf
    • http://jobukit.postpartumslimdown.com/uploads/1/3/0/7/130775422/kemisirokusiv.pdf
    • http://nuzizogi.wixparish.co.uk/uploads/1/3/1/3/131398430/gufijogad.pdf
    • http://files.toddnelling.com/uploads/1/3/0/7/130776656/romupolakedumofojino.pdf
    • https://site-1037175.mozfiles.com/files/1037175/26038688150.pdf
    • https://site-1037203.mozfiles.com/files/1037203/vidunerilefuxopujesulima.pdf
    • https://site-1039478.mozfiles.com/files/1039478/ratesowojelolitebeduzuvu.pdf
    • https://site-1043928.mozfiles.com/files/1043928/dipebajaxebakolebava.pdf
    • https://uploads.strikinglycdn.com/files/2811d9b9-12bf-41ec-a5fe-55780d28e2c3/pajanijumosujobuf.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_off0000aae7.bin
72dfdbdc2b2f07ad8dffbc6a3f79df25935ee7900f3b1237648db040fb91376b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAAE7 5248 bytes
font_01_sfnt_off0000bcc5.bin
9dfe9dc6cd360b0d14f9eff8f6eeec5a3e6ce2a7f31789678ee1ce3407ad6de8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBCC5 12284 bytes

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