Malicious PDF — malware analysis report

Static analysis result for SHA-256 92c1aa63946d0fbf…

MALICIOUS

PDF

58.7 KB Created: 2020-08-13 05:12:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 88da9ce3bc0ebf276124e714859d7604 SHA-1: 11513105c7ed22c4120ddfa8c2736bd3b38add51 SHA-256: 92c1aa63946d0fbfe2e633fb32b35fa134e0cea47c33b0acf7abc1c25842f6a0
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1059.001 Command and Scripting Interpreter: PowerShell T1204.002 Malicious Link

The PDF contains a mass of external links, many of which point to benign content, but one critical link redirects to a known malicious URL. The document body is heavily obfuscated but contains the malicious URL and several benign-looking URLs, suggesting a lure to trick users into clicking the malicious link. The primary malicious URL is https://ttraff.cc/pify?keyword=exception+handling+javatpoint+pdf, which is likely used to redirect users to a phishing or malware distribution site.

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.cc/pify?keyword=exception+handling+javatpoint+pdf
    • http://files.travelwithgraceandstyle.com/uploads/1/3/1/4/131407148/3963438.pdf
    • http://files.courtneyalexanderdesign.com/uploads/1/3/1/1/131163667/0442ca40.pdf
    • http://files.bcmediaphotos.com/uploads/1/3/2/6/132682039/jajufosox_dofapezunemaxop_fufuribudob_dulomoj.pdf
    • http://files.v-i.biz/uploads/1/3/1/6/131606367/tibukewubi.pdf
    • http://files.millsparkbands.com/uploads/1/3/2/8/132815123/e0c84b5bd331.pdf
    • https://cdn.shopify.com/s/files/1/0432/1896/0541/files/karin_slaughter_blindsighted.pdf
    • https://cdn.shopify.com/s/files/1/0431/9048/5150/files/public_administration_course_outline.pdf
    • https://cdn.shopify.com/s/files/1/0436/4029/1486/files/poke_radar_not_working.pdf
    • https://cdn.shopify.com/s/files/1/0435/3949/7112/files/81873748924.pdf
    • https://cdn.shopify.com/s/files/1/0433/4449/4760/files/asturias_tab_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/6694/9799/files/tiwuj.pdf
    • https://cdn.shopify.com/s/files/1/0436/2534/9273/files/best_annotation_app_reddit.pdf
    • https://cdn.shopify.com/s/files/1/0428/5336/7975/files/xazowawu.pdf
    • https://cdn.shopify.com/s/files/1/0431/1177/6416/files/gasulovefoperiradademur.pdf
    • https://cdn.shopify.com/s/files/1/0434/5957/5958/files/xxx_password_hacking.pdf
    • https://cdn.shopify.com/s/files/1/0429/9735/0554/files/rabuse.pdf
    • https://cdn.shopify.com/s/files/1/0434/8638/0197/files/30732919108.pdf
    • https://cdn.shopify.com/s/files/1/0430/1645/4305/files/65737366794.pdf
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/pomegranate_antimicrobial_activity.pdf
    • https://cdn.shopify.com/s/files/1/0438/3604/7522/files/basic_electrical_electronics_engineering_book.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_off000094d2.bin
fef478aed5f0e4f8674be7c3bae6ce26d035653dfe421010cb0bdfa697e90f0a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x94D2 5092 bytes
font_01_sfnt_off0000a623.bin
5e1151bca4e2d6b253d64ec46e9825709ca523ec99f3ef0d6bfbac75712bbb39		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA623 12776 bytes
font_02_sfnt_off0000cf52.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCF52 4324 bytes

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