Malicious PDF — malware analysis report

Static analysis result for SHA-256 470cd3ab7764110d…

MALICIOUS

PDF

41.2 KB Created: 2020-08-09 23:23:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9bdf1b5c8dbfc708ef70c28d76d06425 SHA-1: d9278dc634b31d0978d9ae637b3dbda80252d3d3 SHA-256: 470cd3ab7764110dd9cdd15f80ad646f61048cd954dbdfef0446b5e00cfcbc8c
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics indicating malicious redirector links and a link farm. The embedded document body contains numerous URLs, with the primary suspicious URL being https://ttraff.cc/pify?keyword=caminare+en+presencia+del+se%25C3%25B1or+pdf. This suggests the document's purpose is to lure users into clicking these links, potentially leading to further malicious content or exploitation.

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.cc/pify?keyword=caminare+en+presencia+del+se%25C3%25B1or+pdf
    • http://files.diybuilds.ca/uploads/1/3/1/4/131483337/dukugo.pdf
    • http://files.landonpetersonmedia.com/uploads/1/3/1/4/131483053/7c9420d69ec0193.pdf
    • http://files.bwmusic.net/uploads/1/3/0/7/130775027/pejifi.pdf
    • http://files.capitalfundadvisors.com/uploads/1/3/1/8/131871466/wutinumazijus_bajalex_mebiwovulufori.pdf
    • http://files.nudeandtrue.net/uploads/1/3/1/4/131453494/158596.pdf
    • https://cdn.shopify.com/s/files/1/0431/2920/8992/files/10471184478.pdf
    • https://cdn.shopify.com/s/files/1/0433/1631/4277/files/96145260952.pdf
    • https://cdn.shopify.com/s/files/1/0434/8752/7078/files/nubijedufijepuk.pdf
    • https://cdn.shopify.com/s/files/1/0432/8423/4396/files/tusijodozunarale.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nijudesiko.pdf
    • https://cdn.shopify.com/s/files/1/0435/7154/4225/files/94430298159.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sobobubujuwin.pdf
    • https://cdn.shopify.com/s/files/1/0431/4054/6721/files/lutowaruborexa.pdf
    • https://cdn.shopify.com/s/files/1/0429/1071/1971/files/10064690428.pdf
    • https://cdn.shopify.com/s/files/1/0428/6405/0332/files/balance_druid_weak_auras.pdf
    • https://cdn.shopify.com/s/files/1/0428/0382/2755/files/ripabaratitidege.pdf
    • https://cdn.shopify.com/s/files/1/0432/6631/0299/files/ipad_safari_crash.pdf
    • https://cdn.shopify.com/s/files/1/0429/8909/3018/files/49240658923.pdf
    • https://cdn.shopify.com/s/files/1/0439/5096/4904/files/liralefodazuf.pdf
    • https://cdn.shopify.com/s/files/1/0430/9765/3397/files/pilofodaja.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_off00006003.bin
039257f8523c90769aae60eeb492300c018addbc873be2aa447540c4c704e9e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6003 5416 bytes
font_01_sfnt_off00007210.bin
b9813c2745449b15c970c56095171866fac8859a2ca3c96d52de7869ec5bbe3d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7210 10804 bytes

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