Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd696b2421f4c189…

MALICIOUS

PDF

45.0 KB Created: 2020-07-31 13:47:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a78248d443edf5bc6545fca02b41aada SHA-1: bac674e14303787d2cc7bb034cb57958fb35df4c SHA-256: dd696b2421f4c189b849ea59d59d6c776e02e2ec51352e8b6a772d23bc40c25d
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify. The document body, though heavily obfuscated, contains text suggesting a lure related to 'iannotate pdf windows 10'. The combination of these factors strongly indicates a phishing or malicious redirection attempt.

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=iannotate+pdf+windows+10
    • http://files.whizmeal.org/uploads/1/3/1/3/131379578/403b1.pdf
    • http://files.creativerehablab.com/uploads/1/3/0/9/130969855/9466572.pdf
    • http://files.oehlermill.org/uploads/1/3/0/8/130873875/1eda9ac.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/49186839350.pdf
    • https://cdn.shopify.com/s/files/1/0430/8955/9705/files/20307992540.pdf
    • https://cdn.shopify.com/s/files/1/0430/0469/0581/files/vapisezuruvogovuruno.pdf
    • https://cdn.shopify.com/s/files/1/0429/5488/3231/files/48813436717.pdf
    • https://cdn.shopify.com/s/files/1/0432/3685/1874/files/xaxorexatedujo.pdf
    • https://cdn.shopify.com/s/files/1/0434/0000/3747/files/beloditaxojekowukunageze.pdf
    • https://cdn.shopify.com/s/files/1/0440/0742/4158/files/vosopemipakulusaxedofi.pdf
    • https://cdn.shopify.com/s/files/1/0434/1828/8285/files/viwin.pdf
    • https://cdn.shopify.com/s/files/1/0432/6601/5396/files/nuwaderemoloniv.pdf
    • https://cdn.shopify.com/s/files/1/0429/6350/1222/files/rakipekatelivaberiw.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/
    • https://cdn.shopify.com/s/files/1/0434/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000071db.bin
cc8fbd2bddd3bb4e47a976fab3c3d547475e6fbed9a59193abd107f1ae27f127		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71DB 4920 bytes
font_01_sfnt_off000082bc.bin
563581fb704971763229e884d87013d2d4192e56e88feae8284a5426aba42dbd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82BC 10636 bytes

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