Malicious PDF — malware analysis report

Static analysis result for SHA-256 25b172899482ed7d…

MALICIOUS

PDF

40.9 KB Created: 2020-08-22 09:18:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c7d519165829dd88364dd1c1dd29ae9 SHA-1: 37ce23ef0443370967cb15abae09d8facd3b90d9 SHA-256: 25b172899482ed7d0235b9f62966f1a94dfe1b9e2f7829ac5a60e63171bb47f3
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with a critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=bella+ciao+italian+song+free'. This suggests the document's primary purpose is to redirect users to malicious infrastructure. The document body, though heavily obfuscated, contains references to the redirector URL and other URLs hosted on Shopify, indicating a link farm strategy.

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=bella+ciao+italian+song+free
    • http://nilasotu.candlewyckhomes.com/uploads/1/3/0/8/130813765/vifiku.pdf
    • http://files.soccerbanter.org/uploads/1/3/1/1/131164090/lorixopezideko_jokudebi.pdf
    • http://files.sugarbakeshopperi.com/uploads/1/3/1/6/131606186/3788690.pdf
    • http://vorifuga.jamessulkowskifineart.com/uploads/1/3/1/4/131453405/mefivabuluv-futadotolotute-lupuwetaros.pdf
    • http://files.masonluke.com/uploads/1/3/1/4/131452740/wagoxez.pdf
    • https://cdn.shopify.com/s/files/1/0435/7767/1843/files/47106204204.pdf
    • https://cdn.shopify.com/s/files/1/0430/0737/7561/files/vawujesoz.pdf
    • https://cdn.shopify.com/s/files/1/0434/0239/5798/files/rusesenaxonadulek.pdf
    • https://cdn.shopify.com/s/files/1/0433/4669/0203/files/73817538751.pdf
    • https://cdn.shopify.com/s/files/1/0432/3593/4370/files/88364216253.pdf
    • https://cdn.shopify.com/s/files/1/0430/7048/8730/files/diwapireke.pdf
    • https://cdn.shopify.com/s/files/1/0435/7118/3775/files/carbon_fibre_properties.pdf
    • https://cdn.shopify.com/s/files/1/0432/1761/7057/files/mimegonegepunazemud.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004808.bin
f3251d8bea5d32e8ce012e26b8d1928c27426a0741e40a55216c3242fb57687e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4808 4884 bytes
font_01_sfnt_off000058a6.bin
0be0f45e6a4835eeb996cf22f21a9a9dd6ecca6381da31dbbfef2df13799096a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58A6 14976 bytes
font_02_sfnt_off000086de.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86DE 4324 bytes

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