Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec3ee3a3242495e4…

MALICIOUS

PDF

53.1 KB Created: 2020-08-28 17:11:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b7f95deecb98c520b7d9af83ee653378 SHA-1: a5b6286aaa55c73207b915ae6269079692678a71 SHA-256: ec3ee3a3242495e45f67f79757c02b0e960da62a965da8e2eaf1a77e3b0c78e8
150 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with heuristics indicating a link farm designed to redirect users to malicious infrastructure. The primary malicious redirector URL is ttraff.cc. The document body contains garbled text but includes the malicious URL and a benign-looking Shopify URL, suggesting a lure to disguise the malicious intent. The ML classifier strongly supports the malicious verdict.

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=simeon+panda+workout
    • http://zixasu.sonicblessings.com/uploads/1/3/1/3/131380582/4624016.pdf
    • http://files.paulsullivanleather.co.uk/uploads/1/3/0/9/130969820/mexagoruxulo_mepitazavijeluk_wulafikobaxij_wibupako.pdf
    • http://files.etherealtoneworks.com/uploads/1/3/1/3/131379060/widebu.pdf
    • https://cdn.shopify.com/s/files/1/0430/4856/6941/files/65816004405.pdf
    • https://cdn.shopify.com/s/files/1/0432/2941/3544/files/braden_scale_assessment_tool.pdf
    • https://cdn.shopify.com/s/files/1/0428/3426/4231/files/descriptive_statistics_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0439/8238/9406/files/babylon_s_ashes.pdf
    • https://cdn.shopify.com/s/files/1/0431/7547/7405/files/zigazirezoxa.pdf
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/iso_aperture_shutter_speed_chart.pdf
    • https://cdn.shopify.com/s/files/1/0428/7699/3702/files/selenium_python_bindings.pdf
    • https://cdn.shopify.com/s/files/1/0440/0129/6534/files/farmer_only_dating_apk.pdf
    • https://cdn.shopify.com/s/files/1/0432/3111/7467/files/gufekumo.pdf
    • https://cdn.shopify.com/s/files/1/0435/1705/1039/files/automate_the_boring_stuff.pdf
    • https://cdn.shopify.com/s/files/1/0429/0763/1782/files/mera_bhola_hai_bhandari_video_hd.pdf
    • https://cdn.shopify.com/s/files/1/0433/7162/6659/files/8888625387.pdf
    • https://cdn.shopify.com/s/files/1/0431/7049/6672/files/29683369665.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_off0000920e.bin
67e063680a6983c88dfebe4e42df70cef0f69ba3e5a1702ac16e29271692fce3
pdf-font-stream PDF embedded font (sfnt) at offset 0x920E 5152 bytes
font_01_sfnt_off0000a386.bin
cb6c5ac909d6b3663fddbf28dd40951cb3fcac7a1ef82b75454275d25ec755e9
pdf-font-stream PDF embedded font (sfnt) at offset 0xA386 10516 bytes