Malicious PDF — malware analysis report

Static analysis result for SHA-256 405aee5f8c75f2de…

MALICIOUS

PDF

44.4 KB Created: 2020-08-25 05:14:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 664ab9f040e86885bcd027d7e9413599 SHA-1: c5506886ee6faa50978ffec18fc7ab0779caa790 SHA-256: 405aee5f8c75f2ded00e4d0eb766ad0f1b7189106fda74135b2c724c9ecbae4a
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. Additionally, a PDF link farm heuristic was triggered, suggesting the document is designed to host numerous external links, likely for SEO poisoning or to distribute further malicious content. The embedded URL in the document body further supports this attack pattern.

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=ngfw+test+report+cisco+firepower+4110
    • http://files.shanghaiveggies.com/uploads/1/3/1/4/131483336/5458142.pdf
    • http://jofaven.thebonafideblonde.com/uploads/1/3/1/4/131406893/18cedd8445.pdf
    • http://files.fineartbypatty.com/uploads/1/3/1/6/131636825/kanuvidudekeji.pdf
    • http://files.latinmasshv.org/uploads/1/3/1/4/131453896/4155495.pdf
    • https://cdn.shopify.com/s/files/1/0433/6818/6015/files/orgb_5th_edition_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/5472/6310/files/vojimemojufegejex.pdf
    • https://cdn.shopify.com/s/files/1/0434/5197/3794/files/fomoti.pdf
    • https://cdn.shopify.com/s/files/1/0433/4885/2891/files/14667526301.pdf
    • https://cdn.shopify.com/s/files/1/0438/6557/1493/files/mijujisugizemibigi.pdf
    • https://cdn.shopify.com/s/files/1/0430/1219/4463/files/birthday_wishes_video_song_for_brother.pdf
    • https://cdn.shopify.com/s/files/1/0430/8772/4704/files/40391872553.pdf
    • https://cdn.shopify.com/s/files/1/0435/4762/3592/files/96741882219.pdf
    • https://cdn.shopify.com/s/files/1/0427/9812/1119/files/tamil_typing_guide.pdf
    • https://cdn.shopify.com/s/files/1/0435/4480/5525/files/89993277445.pdf
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/51855363292.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_off000063b8.bin
dfca50009f57c31175e37b36ce58b596608e8f44f504064ddf5607e1c6a3fb6c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63B8 5284 bytes
font_01_sfnt_off000075f2.bin
22fdbbea6e26fd850cb5e3ea6cf4c4f4583c3dd6fecc542cb27f099d033bb29f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75F2 14860 bytes

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