Malicious PDF — malware analysis report

Static analysis result for SHA-256 20f66aa65c070830…

MALICIOUS

PDF

51.8 KB Created: 2020-08-22 11:17:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1917fa134a4e50530c0906ed17b1a4df SHA-1: 13386412a9984e7faa169b9a3f54320b68ab556f SHA-256: 20f66aa65c070830fbd07925355bf765498939218e633f81d4a7c5a0c02b0a36
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=kindle+for+samsung+apk'. It also features a link farm with numerous PDFs hosted on Shopify, one of which is 'https://cdn.shopify.com/s/files/1/0437/2057/3082/files/baixar_catlogo_avon_em.pdf'. The presence of a 'download button' heuristic suggests a social engineering lure to trick users into clicking the malicious link. No scripts were extracted from this sample.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=kindle+for+samsung+apk
    • http://nejotofu.marlasmathpages.com/uploads/1/3/1/4/131438428/2e241d5.pdf
    • http://rozixuma.barbaraearly.com/uploads/1/3/2/6/132695375/furidegegijezitanez.pdf
    • http://nafaw.amcskokie.com/uploads/1/3/1/3/131379803/da2945e0c1c99d.pdf
    • http://vejigi.signalsecret.space/uploads/1/3/1/4/131437119/tulogeponasenap-wijiresamo-vigekozaga-raronifuko.pdf
    • http://vejigi.signalsecret.space/uploads/1/3/1/4/131437119/tulogeponasenap-wiji
    • https://cdn.shopify.com/s/files/1/0437/2057/3082/files/baixar_catlogo_avon_em.pdf
    • https://cdn.shopify.com/s/files/1/0432/3688/4642/files/rugurifopaturekigonesa.pdf
    • https://cdn.shopify.com/s/files/1/0431/6594/1917/files/27177891610.pdf
    • https://cdn.shopify.com/s/files/1/0439/2783/0696/files/monty_python_lumberjack.pdf
    • https://cdn.shopify.com/s/files/1/0433/8024/4643/files/biblias_de_estudio_gratis_en.pdf
    • https://cdn.shopify.com/s/files/1/0429/9672/7961/files/vintage_guitar_price_guide_2017.pdf
    • https://cdn.shopify.com/s/files/1/0437/6982/3390/files/dodibotilofu.pdf
    • https://cdn.shopify.com/s/files/1/0435/2645/5455/files/12735028309.pdf
    • https://cdn.shopify.com/s/files/1/0431/1102/2756/files/sujun.pdf
    • https://cdn.shopify.com/s/files/1/0432/0896/6301/files/rovijitepujusezeva.pdf
    • https://cdn.shopify.com/s/files/1/0437/1369/1799/files/workplace_health_and_safety_qld.pdf
    • https://cdn.shopify.com/s/files/1/0433/7411/7015/files/vilixefodojaduba.pdf
    • https://cdn.shopify.com/s/files/1/0430/8438/2357/files/warrior_stance_macro.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_off00008ab2.bin
0dc5d8fc36e9eb38cf6abe3a7906a1cfeaeb2c831d9f88edef702b9966b81583
pdf-font-stream PDF embedded font (sfnt) at offset 0x8AB2 5396 bytes
font_01_sfnt_off00009cf1.bin
246172f8a88d68298ff39cf2f84b6fbd5efcf97b064e445d35a3f1627526bed8
pdf-font-stream PDF embedded font (sfnt) at offset 0x9CF1 10916 bytes