Malicious PDF — malware analysis report

Static analysis result for SHA-256 793a3cd1e6e51f74…

MALICIOUS

PDF

57.6 KB Created: 2020-09-21 11:30:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 439fab13f52e74aa8861f1f06f59b41d SHA-1: 1b99dc96b8bd64a81c0e2053f6df15272ca3adda SHA-256: 793a3cd1e6e51f74fba3536df48a7712e73eb8b22345a3f991cc851789ec7aab
120 Risk Score

Malware Insights

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

The PDF contains a link farm designed to lure users to malicious redirector infrastructure. The primary malicious URL identified is https://ttraff.club/wix?keyword=discovering+french+nouveau+rouge+workbook+answers+unit+2, which is likely intended to deliver a secondary payload or phish for credentials. The document body itself is heavily obfuscated but contains references to the malicious URL and other benign-looking PDF links, suggesting a social engineering attempt.

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.club/wix?keyword=discovering+french+nouveau+rouge+workbook+answers+unit+2
    • http://jolugobe.xcivcouture.shop/uploads/1/3/0/7/130776246/4691736.pdf
    • http://files.lifes-a-trip.com/uploads/1/3/0/9/130969059/022d1dfc228362.pdf
    • http://ninubo.ewsevents.co.uk/uploads/1/3/1/6/131606402/3609055.pdf
    • https://cdn.shopify.com/s/files/1/0433/1087/4777/files/20401894717.pdf
    • https://cdn.shopify.com/s/files/1/0431/0463/2998/files/commerce_township_police_reports.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/91428743782.pdf
    • https://3b66f482-a922-4362-8c2d-bd199378cf01.filesusr.com/ugd/65d6f7_29dcbb5f74fe44ddb6b476c227b140ed.pdf?index=true
    • https://90516c9b-6c8d-440c-99b3-7c523392ab6f.filesusr.com/ugd/9058e5_265881acbdc248809c53d3440070a205.pdf?index=true
    • https://d3134b45-dfd9-4921-8128-7cfe27f386a5.filesusr.com/ugd/3e87bf_196b305411374753b58c21901d6eac47.pdf?index=true
    • https://9bed1d74-c945-4572-8429-993c7073fefe.filesusr.com/ugd/c2bf0a_605baa77297d4f9587df4c38bb4f2670.pdf?index=true
    • https://58aa49b7-8f13-4579-862e-b89535f1201f.filesusr.com/ugd/a4ea6c_69a6cef553134b159dff13ffa90a0d24.pdf?index=true
    • https://0f1ab563-a6ec-4fd7-86a0-7fd47f787b7f.filesusr.com/ugd/5926b4_38d37ccd49944d92987bb5f3b6864855.pdf?index=true
    • 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_off00009525.bin
323a12479c4a6cfe45d77ad56ac638a3b7cc4e7dbf604764756751292fce4775		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9525 5600 bytes
font_01_sfnt_off0000a852.bin
e82d0486a3d132eb9c8399ad2902eb726f4e71d1088c6f14d75f4a6b6fa36036		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA852 15872 bytes

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