Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e168fccdeb558a1…

MALICIOUS

PDF

83.6 KB Created: 2021-01-15 07:23:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 729c14fa85a9b026e5bc8c421e7db5b8 SHA-1: 75e0fffa2186e4c0ca1ecc8819f48591b0255875 SHA-256: 2e168fccdeb558a1e97f9aa3ca4cf6ae92a925b7ebcbc4729d82e61ab125ab38
244 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains numerous embedded links, many of which point to disposable hosting and redirector services, indicating a phishing or scam attempt. The 'Ayushman bharat pdf form' text suggests a lure related to a government health scheme. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to malicious sites for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://traffmen.ru/aws?utm_term=ayushman+bharat+pdf+form In PDF document text
    • https://cdn-cms.f-static.net/uploads/4459479/normal_5fa27f32dda0c.pdfIn PDF document text
    • https://dutajidadu.weebly.com/uploads/1/3/4/7/134730474/c62ab695cfd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367289/normal_5fdef19594eb7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426810/normal_5fec2912749a0.pdfIn PDF document text
    • https://site-1176918.mozfiles.com/files/1176918/rojezefamawos.pdfIn PDF document text
    • https://site-1247446.mozfiles.com/files/1247446/44251700021.pdfIn PDF document text
    • https://site-1172756.mozfiles.com/files/1172756/chatbot_templates_for_facebook_messenger.pdfIn PDF document text
    • https://gigawixirebasig.weebly.com/uploads/1/3/1/8/131857482/4098721.pdfIn PDF document text
    • https://site-1176991.mozfiles.com/files/1176991/space_live_wallpaper_hd_iphone_7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424027/normal_5f9fcf07cabb5.pdfIn PDF document text
    • https://site-1181123.mozfiles.com/files/1181123/punupesaz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404975/normal_5f9f5cbf0915a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384832/normal_5f8e99d9d8e30.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000de06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE06 5196 bytes
SHA-256: d3db9df62aa7d4a34acfe6bd265a8c4ec0f602be6a50554c686361370684f315
font_01_sfnt_off0000ef70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF70 11236 bytes
SHA-256: 83ea8160205adbd80dcab3ee135edea702c34eccd422245ed2da63785b3b6ac9
font_02_sfnt_off00011500.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11500 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
font_03_sfnt_off00012300.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12300 9172 bytes
SHA-256: 4473b3d3388fa20b8c23b6bbdc36050d0963af479a20b0849f100078779feb2c

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