Malicious PDF — malware analysis report

Static analysis result for SHA-256 535324bb02f9983f…

MALICIOUS

PDF

44.3 KB Created: 2020-08-22 01:33:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4d6b06608d5a9a2f15f3f946744cc4dc SHA-1: f47d5580020286956aa377371d27f700b217d528 SHA-256: 535324bb02f9983fbdf24b517c8141901825a25ff8bce0c54704b610c1ade5d3
128 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, identified as a link farm. One of these links, 'https://ttraff.ru/pify?keyword=score+de+apache+ii+pdf', points to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains references to this URL, suggesting the primary purpose is to redirect users to potentially harmful content. No scripts were extracted, limiting further analysis of execution chains.

Heuristics 4

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=score+de+apache+ii+pdf
    • http://zopopek.lawsontrek.com/uploads/1/3/1/3/131380429/sexase.pdf
    • http://files.charliesblackpudding.com/uploads/1/3/1/4/131438692/vivomizusa.pdf
    • http://files.fwmihk.org/uploads/1/3/2/3/132302993/muguju.pdf
    • http://files.teamrehab.uk/uploads/1/3/0/9/130969855/lemefotaxezu.pdf
    • http://mavalag.1sthkcsg.org/uploads/1/3/0/7/130776760/wuralodeba_govatatapeki_zexadi_puvuto.pdf
    • https://cdn.shopify.com/s/files/1/0436/1011/2163/files/descargar_libro_aura_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0431/6761/3087/files/glyph_of_the_orca.pdf
    • https://cdn.shopify.com/s/files/1/0435/0319/0181/files/pevibad.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/budaya_populer_jepang.pdf
    • https://cdn.shopify.com/s/files/1/0434/0809/7445/files/74428228825.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xajubebajodefemun.pdf
    • https://cdn.shopify.com/s/files/1/0431/0453/4692/files/gunixuwafigamuligelutopil.pdf
    • https://cdn.shopify.com/s/files/1/0431/7829/5450/files/bipagilojatufumak.pdf
    • https://cdn.shopify.com/s/files/1/0437/2280/1306/files/icao_annex_6.pdf
    • https://cdn.shopify.com/s/files/1/0436/3298/4222/files/kosuronovusaw.pdf
    • https://cdn.shopify.com/s/files/1/0435/4405/1871/files/truth_and_reconciliation_commission_canada_report.pdf
    • https://cdn.shopify.com/s/files/1/0433/8060/5077/files/92621926192.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_off00006f7f.bin
03f50e9a6701055f1941dca7d55a6e0a0446a9ddcabbd0d78e85ad5b5594c85f
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F7F 5136 bytes
font_01_sfnt_off000080e5.bin
6c914a5dc5f058f4f63dc72b11223101f534e4cb332efbadb9da7aa9c00aa55a
pdf-font-stream PDF embedded font (sfnt) at offset 0x80E5 10320 bytes