Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cd09fe85b6bd5b2…

MALICIOUS

PDF

52.1 KB Created: 2020-08-14 06:32:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6a3398977c7444f952979d4a5d560b5d SHA-1: e7cff57392d2e57aed706780d4a6311364847af1 SHA-256: 1cd09fe85b6bd5b23a4aa8c8deed91be9b4b59f9a71ca4771f7b23c24e7192e2
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying it as a malicious redirector. One prominent link, 'https://ttraff.com/wb?keyword=food%20pyramid%20pdf%20file', is specifically flagged as malicious. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect users to malicious infrastructure under the guise of providing a 'food pyramid pdf file'. No scripts were extracted, limiting the analysis to the PDF structure and its embedded links.

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/wb?keyword=food%20pyramid%20pdf%20file
    • http://bumape.jasontoonwrites.com/uploads/1/3/1/0/131070718/1a161f8ea3.pdf
    • http://files.raquelmeraki.com/uploads/1/3/1/0/131070596/sodipuditovuxovib.pdf
    • http://files.ponahealth.com/uploads/1/3/2/6/132681192/wezapujapix.pdf
    • https://cdn.shopify.com/s/files/1/0430/3483/7149/files/kidag.pdf
    • https://cdn.shopify.com/s/files/1/0437/0779/3561/files/metronome_beats_apkpure.pdf
    • https://cdn.shopify.com/s/files/1/0438/4981/0080/files/lisd_calendar_2020_19.pdf
    • https://cdn.shopify.com/s/files/1/0428/1961/6935/files/19517061537.pdf
    • https://cdn.shopify.com/s/files/1/0437/5986/1909/files/92385509399.pdf
    • https://cdn.shopify.com/s/files/1/0434/3287/0037/files/corbettmaths_median_from_a_frequency_table_answers.pdf
    • https://cdn.shopify.com/s/files/1/0432/3999/7595/files/11237123495.pdf
    • https://cdn.shopify.com/s/files/1/0434/0826/1285/files/93216907499.pdf
    • https://cdn.shopify.com/s/files/1/0435/0849/8591/files/77783130385.pdf
    • https://cdn.shopify.com/s/files/1/0433/0595/9574/files/lukamipuzerofi.pdf
    • https://cdn.shopify.com/s/files/1/0429/1405/4300/files/kukifiwotituzitisotigo.pdf
    • https://cdn.shopify.com/s/files/1/0435/1338/1028/files/newokezimivazenukaj.pdf
    • https://cdn.shopify.com/s/files/1/0431/5312/9629/files/criminal_law_books_in_tamil.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_off00008dd9.bin
43f1ffccc558daa7bce479a53c9b81c913a46c88584157013e52ea876fb47a51		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DD9 5068 bytes
font_01_sfnt_off00009f13.bin
6c718ed247f1a588632ff99533992892a58eea85bbba422bbbdcfc222f68a51c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F13 10728 bytes

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