Malicious PDF — malware analysis report

Static analysis result for SHA-256 b964a153d87f6afb…

MALICIOUS

PDF

46.3 KB Created: 2020-08-16 21:28:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 06e3a1ad1f0c18533e9e0298d9e6a58a SHA-1: 76d5cf6b78be48452286d0745a07573606f66a43 SHA-256: b964a153d87f6afbfc2e9349b2ea4b9d200b2e040c521a4b6d84b5243ea4d4bd
150 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with the primary link directing to a known malicious redirector. The document body, though partially corrupted, contains the URL 'https://ttraff.ru/pify?keyword=android+tv+box+malaysia+yang+terbaik', which is also present in the heuristics. This suggests the document's purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing. No scripts were extracted from this sample.

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.ru/pify?keyword=android+tv+box+malaysia+yang+terbaik
    • http://files.humanist-sociology.org/uploads/1/3/1/4/131409755/f0e310b82d5.pdf
    • http://files.magnetvideolab.com/uploads/1/3/1/4/131408432/kerafirujesutav.pdf
    • http://files.ccbcmassagetherapyprogram.com/uploads/1/3/1/4/131438616/rugokigadu.pdf
    • http://files.triedandtruegranola.com/uploads/1/3/2/6/132681579/nefiwigamiw.pdf
    • http://files.jlkarchitecturaldesign.com/uploads/1/3/0/7/130775632/juwapenanidi.pdf
    • https://cdn.shopify.com/s/files/1/0449/2309/3147/files/advanced_life_support_australia.pdf
    • https://cdn.shopify.com/s/files/1/0434/4443/7144/files/60981113128.pdf
    • https://cdn.shopify.com/s/files/1/0432/2829/9428/files/law_school_unofficial_transcript_template.pdf
    • https://cdn.shopify.com/s/files/1/0432/7089/7824/files/tepitavajiw.pdf
    • https://cdn.shopify.com/s/files/1/0440/5205/4181/files/xubasivozofurivevunas.pdf
    • https://cdn.shopify.com/s/files/1/0437/5068/6874/files/23827516839.pdf
    • https://cdn.shopify.com/s/files/1/0438/9571/8040/files/busted_television_gungeon.pdf
    • https://cdn.shopify.com/s/files/1/0429/9289/4115/files/daxavulalo.pdf
    • https://cdn.shopify.com/s/files/1/0434/9018/1286/files/retonevupebesubatufaro.pdf
    • https://cdn.shopify.com/s/files/1/0431/1144/8729/files/xanelelukavanuzuvoxibodod.pdf
    • https://cdn.shopify.com/s/files/1/0432/7614/0710/files/gba_4_ios_9.pdf
    • https://cdn.shopify.com/s/files/1/0432/5569/3470/files/amazing_grace_by_mary_hoffman.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_off0000649b.bin
63f738401f05868cc6395bc41c68f7ae11ed996adfcf3b20db12a9169c9c46f7
pdf-font-stream PDF embedded font (sfnt) at offset 0x649B 5356 bytes
font_01_sfnt_off000076c0.bin
51fd82ca21e9decf5171a31832412d11fddf5af335eb653bc0bbc6386c1c0bd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x76C0 12140 bytes
font_02_sfnt_off00009e20.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71
pdf-font-stream PDF embedded font (sfnt) at offset 0x9E20 4324 bytes