Malicious PDF — malware analysis report

Static analysis result for SHA-256 850e4452f2e290f1…

MALICIOUS

PDF

115.0 KB Created: 2020-08-06 22:09:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e801579d556a9d7b537a32e7570b1c02 SHA-1: 3a5482e740bc6f6fb7a8b3f7f5c338b62f520f3c SHA-256: 850e4452f2e290f1583911e5ca69111887e91c3258ce6631e0c191b23efe01d4
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a lure for an advance-fee scam, referencing a 'callese y venda pdf download' and a lottery/prize. It embeds a link that redirects to malicious infrastructure, specifically `https://ttraff.ru/pify?keyword=callese+y+venda+pdf+download`. This indicates a social engineering attack designed to trick users into visiting a malicious site. No scripts were extracted, limiting the analysis of further 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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=callese+y+venda+pdf+download
    • http://nisolu.fourseasonsbeautysalon.com/uploads/1/3/1/8/131856257/19a6d407c957e.pdf
    • http://files.kathrynhumphreys.com/uploads/1/3/1/3/131380717/1521771.pdf
    • http://files.edutobest.com/uploads/1/3/1/6/131636677/xutunatume.pdf
    • http://files.learnenglishspelling.com/uploads/1/3/0/7/130739376/0e1b31.pdf
    • https://cdn.shopify.com/s/files/1/0427/9762/9596/files/92112531282.pdf
    • https://cdn.shopify.com/s/files/1/0434/0809/7436/files/77601139313.pdf
    • https://cdn.shopify.com/s/files/1/0430/6409/8970/files/zaxefibejov.pdf
    • https://cdn.shopify.com/s/files/1/0435/2029/5064/files/gipusididivifeveriman.pdf
    • https://cdn.shopify.com/s/files/1/0436/4802/4741/files/sertifikat_akreditasi_universitas_indonesia.pdf
    • https://cdn.shopify.com/s/files/1/0431/7354/4093/files/8th_grade_math_final_exam_2020.pdf
    • https://cdn.shopify.com/s/files/1/0435/6653/0721/files/1068944048.pdf
    • https://cdn.shopify.com/s/files/1/0437/2417/7576/files/wufosusisatiburusilix.pdf
    • https://cdn.shopify.com/s/files/1/0437/0595/8565/files/xobezoda.pdf
    • https://cdn.shopify.com/s/files/1/0434/6563/8048/files/31726720161.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_off00018666.bin
a48cf085d5740d8a2ea785c62227ba172c1af60eca5655131c2397d8fa188457
pdf-font-stream PDF embedded font (sfnt) at offset 0x18666 5100 bytes
font_01_sfnt_off000197f1.bin
239cd19b3448fb4f131b71b47a83a759ccb24ee2bc2910d8981119653e8c8a35
pdf-font-stream PDF embedded font (sfnt) at offset 0x197F1 10924 bytes