Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3528bc4b68ff02e…

MALICIOUS

PDF

60.6 KB Created: 2020-08-12 12:15:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 57731d9d62e5c442a2cc8c8844fe85d2 SHA-1: 3dc544368cc5e0e024112a7808a6a95ff24e227e SHA-256: b3528bc4b68ff02eabf0c57a8aeeff1dba5d3011a1544859e3a7bbc3b40dae4a
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, many of which point to a link farm hosted on Shopify. One of these links, https://ttraff.com/pify?keyword=attahiyat+surah+in+telugu+pdf, is identified as a malicious redirector. The document body, though heavily obfuscated, appears to be a lure related to a religious text, likely to trick users into clicking the malicious link. No scripts were extracted from this sample.

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=attahiyat+surah+in+telugu+pdf
    • http://files.coachyash.com/uploads/1/3/1/3/131380612/zuxaba_fewamugofow_nozujawisaf.pdf
    • http://metanoj.nhbirth.com/uploads/1/3/1/3/131398591/bosajap.pdf
    • http://files.kellicorneliaphotography.com/uploads/1/3/1/4/131438539/wilaniluderabumejuge.pdf
    • http://sufulaga.uusandiego.org/uploads/1/3/2/6/132681670/joxupag.pdf
    • http://kapaved.crossfithh.de/uploads/1/3/0/7/130776418/vixuxitupegixux.pdf
    • https://cdn.shopify.com/s/files/1/0437/2906/0001/files/92138009654.pdf
    • https://cdn.shopify.com/s/files/1/0427/5778/3718/files/65637405116.pdf
    • https://cdn.shopify.com/s/files/1/0428/5261/4311/files/kurujedesuwugitotasobore.pdf
    • https://cdn.shopify.com/s/files/1/0431/1102/2756/files/mojegisegoxubugo.pdf
    • https://cdn.shopify.com/s/files/1/0434/4525/6352/files/tojabefesopugaferapuxa.pdf
    • https://cdn.shopify.com/s/files/1/0429/1470/9670/files/makalah_ashabul_kahfi.pdf
    • https://cdn.shopify.com/s/files/1/0440/6041/0006/files/89688563309.pdf
    • https://cdn.shopify.com/s/files/1/0437/6782/4533/files/notitevadewetu.pdf
    • https://cdn.shopify.com/s/files/1/0433/7437/9157/files/biology_notes_for_class_12_chapter_wise_free_download.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064c2.bin
579712a04f4da026f5281473de0de34b9b6d0770b6570ba9e27c6790f3dc44c1
pdf-font-stream PDF embedded font (sfnt) at offset 0x64C2 5168 bytes
font_01_sfnt_off0000764c.bin
e2e8d8189c15a781ab70c5ecf92798c811a4ad0e584130cf7a810d033a603669
pdf-font-stream PDF embedded font (sfnt) at offset 0x764C 7200 bytes
font_02_sfnt_off00008c7a.bin
7c0b0de332f2303d31cb6efcafd498def8a75ac33d17791c4ad6578bbff11ca6
pdf-font-stream PDF embedded font (sfnt) at offset 0x8C7A 14736 bytes
font_03_sfnt_off0000bb8b.bin
f2a778c2ea287ae96c6cf2a0055ac58f997fba8998a2172cfe35231de587f52a
pdf-font-stream PDF embedded font (sfnt) at offset 0xBB8B 17788 bytes
font_04_sfnt_off0000d653.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0xD653 4324 bytes