Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0fedacda37fcf11…

MALICIOUS

PDF

37.7 KB Created: 2020-08-18 18:19:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bf0ae864c2e410884e1de875afbeb880 SHA-1: 2018acde9226c2df5dbcf1d4de74aafa4e5587b6 SHA-256: e0fedacda37fcf11539bbd90b2f09e153c8d8124fc0f92e2714e8b1fa97937c8
150 Risk Score

Malware Insights

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

The PDF was flagged for containing a malicious redirector link and a large number of external PDF links, suggesting a link farm or SEO abuse tactic. The ML classifier also strongly indicated maliciousness. The document body contains garbled text but includes the suspicious URL https://ttraff.ru/pify?keyword=adina+songs+free, which is likely the primary malicious entry point. The presence of numerous links to other PDFs, including benign ones on Shopify, indicates a broad distribution or redirection strategy.

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/pify?keyword=adina+songs+free
    • http://files.emperatrice-maltese.co.uk/uploads/1/3/1/4/131409717/fad7cdcd7d.pdf
    • http://files.redhawkcommunity.com/uploads/1/3/1/0/131070618/tuxuvunanisupilunade.pdf
    • http://xekam.oneofthosedays.org/uploads/1/3/1/8/131856666/puseroraxut.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wugituvunajobi.pdf
    • https://cdn.shopify.com/s/files/1/0437/1690/3080/files/65158394483.pdf
    • https://cdn.shopify.com/s/files/1/0430/0609/9605/files/fuwatoxolaxanilapit.pdf
    • https://cdn.shopify.com/s/files/1/0429/9423/7589/files/zuzifawezorojabitukil.pdf
    • https://cdn.shopify.com/s/files/1/0438/3732/5472/files/bbc_janala_english_learning_book.pdf
    • https://cdn.shopify.com/s/files/1/0431/3445/1874/files/fifalum.pdf
    • https://cdn.shopify.com/s/files/1/0433/4498/6280/files/gst_annual_return_download.pdf
    • https://cdn.shopify.com/s/files/1/0452/5637/6480/files/subcellular_organelles_and_their_functions.pdf
    • https://cdn.shopify.com/s/files/1/0430/9359/0170/files/rudukisop.pdf
    • https://cdn.shopify.com/s/files/1/0432/1083/4077/files/ca_course_details.pdf
    • https://cdn.shopify.com/s/files/1/0438/0357/4432/files/agilmente_libro_gratis.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_off00004ae5.bin
ca021c93ec2d34e9f3d2500d64889ba19c04dbd97f486da51aa5f3899e616107		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4AE5 5032 bytes
font_01_sfnt_off00005c0c.bin
2fb123dc10f5dbd790eef914492cc789a6289ce6a739aa514a4189bf271dbcd9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C0C 14056 bytes

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