Malicious PDF — malware analysis report

Static analysis result for SHA-256 39b97a9cc4498797…

MALICIOUS

PDF

40.0 KB Created: 2020-08-24 16:01:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0498bc1c5718ee55d5fa73733680d7ee SHA-1: f010b617cb62cdf0c6de0dd5e63e1f4a635e4872 SHA-256: 39b97a9cc44987971d035a7df1a5994296a66fab405d15786fb37a017aaa42ad
150 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.com, disguised as a free printable gingerbread house template. The document body and embedded URLs suggest a lure to a phishing or malware distribution site. The ML classifier strongly indicated maliciousness, and the PDF structure includes a link farm, further supporting malicious intent.

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.com/pify?keyword=free+printable+paper+gingerbread+house+templates
    • http://firosowu.jimnelsonphotography.com/uploads/1/3/0/9/130969577/gefotobinalir_nerisu_duxiviz.pdf
    • http://vezab.stjohnlutherans.org/uploads/1/3/1/4/131413418/pitibu_bamof.pdf
    • http://damaximur.katamoncherry.com/uploads/1/3/1/4/131437622/kikedoz_nelonofakov_wifez.pdf
    • https://cdn.shopify.com/s/files/1/0427/5562/1031/files/96698382283.pdf
    • https://cdn.shopify.com/s/files/1/0463/3713/0658/files/fererebodilidoxuvax.pdf
    • https://cdn.shopify.com/s/files/1/0433/5003/2549/files/43679807222.pdf
    • https://cdn.shopify.com/s/files/1/0432/7945/0272/files/lebolonununoto.pdf
    • https://cdn.shopify.com/s/files/1/0433/1126/7990/files/fipivave.pdf
    • https://cdn.shopify.com/s/files/1/0428/7630/5564/files/74874798682.pdf
    • https://cdn.shopify.com/s/files/1/0434/3834/2311/files/sda_english_songs.pdf
    • https://cdn.shopify.com/s/files/1/0431/5188/4445/files/kunipoxolosi.pdf
    • https://cdn.shopify.com/s/files/1/0428/3029/9292/files/52411369380.pdf
    • https://cdn.shopify.com/s/files/1/0439/1682/0635/files/the_cambridge_companion_to_archaic_greece.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_off00005cec.bin
31e1667f49385962a1413622f38f6f7d89d21e7f9d465669934133cf14b8c7fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CEC 5468 bytes
font_01_sfnt_off00006f46.bin
952ea97c0a03b3d6b8dae69ec7fb1770b2a51dd614a3315cd2d8d9ffaf5ecc98		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F46 10828 bytes

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