Malicious PDF — malware analysis report

Static analysis result for SHA-256 de21be570695d5f4…

MALICIOUS

PDF

53.5 KB Created: 2020-08-20 13:53:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 761aa813c02b50804186987b221e8460 SHA-1: e617db5edf1247ed704acd9105e9ec86ce9185a1 SHA-256: de21be570695d5f4a72cf0a62374d95bfe6e302c2d1b27391a287ae662fcdd72
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=cardiopatias+congenitas+acianogenas+pdf'. This suggests the document is designed to redirect users to malicious content, likely for phishing or malware distribution. 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.ru/pify?keyword=cardiopatias+congenitas+acianogenas+pdf
    • http://tebim.maitrikundalini.yoga/uploads/1/3/1/3/131381518/c8594e0.pdf
    • http://files.jotsfromjill.com/uploads/1/3/1/4/131438776/1cfb7c8da.pdf
    • http://boxalof.jessicaesalvatore.com/uploads/1/3/2/8/132814930/568051.pdf
    • http://files.gratiotfarmersmarkets.com/uploads/1/3/1/1/131164202/zojetubokaki-pezita.pdf
    • http://monojifi.paraglidingintaiwan.com/uploads/1/3/1/4/131437886/944670.pdf
    • https://cdn.shopify.com/s/files/1/0432/9114/8444/files/java_programming_language_book.pdf
    • https://cdn.shopify.com/s/files/1/0438/6196/7013/files/mtg_arena_uninstalled_itself.pdf
    • https://cdn.shopify.com/s/files/1/0448/4674/3709/files/css_material_design_shadow.pdf
    • https://cdn.shopify.com/s/files/1/0430/7052/1495/files/jodejedekixatoranavamowin.pdf
    • https://cdn.shopify.com/s/files/1/0430/9411/4465/files/pisaruluguzud.pdf
    • https://cdn.shopify.com/s/files/1/0428/6365/7119/files/17939053629.pdf
    • https://cdn.shopify.com/s/files/1/0428/0428/1511/files/global_innovation_linkages_programme_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0435/8393/0527/files/81857108009.pdf
    • https://cdn.shopify.com/s/files/1/0430/5915/1009/files/xudavuzevetozoseb.pdf
    • https://cdn.shopify.com/s/files/1/0434/6953/7432/files/borogojidakozovobaxif.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_off00008735.bin
b697cd367c350361ce8d5493dc0bbee288973bea99aff72216929fd2ee55b52d
pdf-font-stream PDF embedded font (sfnt) at offset 0x8735 5104 bytes
font_01_sfnt_off000098a0.bin
9adaea7a0a1a585a5f76fc57746548301143a77d960ae0c4cff07102118c64c8
pdf-font-stream PDF embedded font (sfnt) at offset 0x98A0 9860 bytes
font_02_sfnt_off0000ba4e.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0xBA4E 4324 bytes