Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e299c3e852055ca…

MALICIOUS

PDF

44.4 KB Created: 2020-08-30 17:40:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: baacaa0872042466273d1c10175fb4d8 SHA-1: 2e44b1d354537128c644ef541a7bed94480f0c38 SHA-256: 7e299c3e852055cad2668fb88d2d94d1e9a5bb62dc3f1bc3ff34841de3cc5250
150 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it points to known malicious infrastructure. The document body, though heavily obfuscated, contains text related to a 'John Deere 4045tf275 service manual', suggesting a lure to entice users to click the embedded malicious link. The presence of a PDF link farm further supports the malicious intent of distributing links to potentially harmful content.

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.ru/wix?keyword=john+deere+4045tf275+service+manual
    • https://static.usrfiles.com/ugd/b8c837_ba93b535eeeb4a2d9bc6324b2a4f0474.pdf
    • https://static.usrfiles.com/ugd/4b7290_03b2a9cf851f401aaee1924bea5c8fc0.pdf
    • https://static.usrfiles.com/ugd/b8c837_896d13de34924b1e8fcb7f854960b5df.pdf
    • https://static.usrfiles.com/ugd/314c35_47627109f8644b0293886fd7f5697245.pdf
    • https://static.usrfiles.com/ugd/b8c837_a32a52964d8f440ab9dfd5f79824a3d7.pdf
    • https://static.usrfiles.com/ugd/8cbfce_06790d76683940008768cbf682a97f7a.pdf
    • https://static.usrfiles.com/ugd/45fd81_6bab123f4c5642e4a71b69ed72140bb5.pdf
    • https://static.usrfiles.com/ugd/b8c837_5d28489ab55447a9960b74f84fa48ed3.pdf
    • https://static.usrfiles.com/ugd/b8c837_6eb4a8b1930d423eb87b3e8f3afcc765.pdf
    • https://cdn.shopify.com/s/files/1/0433/5845/3918/files/50038451571.pdf
    • https://cdn.shopify.com/s/files/1/0437/8597/8013/files/length_conversion_table_in.pdf
    • https://cdn.shopify.com/s/files/1/0432/6513/0660/files/mamoxenutanetedepupeke.pdf
    • https://cdn.shopify.com/s/files/1/0433/9538/3446/files/karuna_reiki_symbols.pdf
    • https://cdn.shopify.com/s/files/1/0431/8534/0580/files/pemeluwuxa.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_off000065a1.bin
ebf9bdf6c2d9c743f32eb4de352c7bb0a02536ddbcc8d26945f8a008110157a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65A1 5876 bytes
font_01_sfnt_off0000798f.bin
4539b86fad003a77cf271696c3d83735064ac96aad84cbf988e7b6ec46922579		 pdf-font-stream PDF embedded font (sfnt) at offset 0x798F 13468 bytes

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