Malicious PDF — malware analysis report

Static analysis result for SHA-256 78eba39beea252a8…

MALICIOUS

PDF

66.4 KB Created: 2020-10-25 23:00:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: e7f96fb5062a98b4e2ddc1bd12a50824 SHA-1: 15be53caf1d87ff7110d2c901c14f3bcd51e7ccc SHA-256: 78eba39beea252a8b91bea2e885dc915bf17b923a0597cd8c538e2faafc47c60
154 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL that triggered the malicious redirector heuristic. This suggests the document is designed to lead users to malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • 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://ttraff.com/123?keyword=lirik+qasidah+muhammadiyah+pdf In PDF document text
    • https://vadurevagide.weebly.com/uploads/1/3/3/9/133999829/6fddae3e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367947/normal_5f8ddc4a3e1b5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410415/normal_5f93e1f77b993.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393759/normal_5f8f9ccf36e4f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375521/normal_5f8cb1e49aff9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370064/normal_5f8864f705dfd.pdfIn PDF document text
    • https://masogipu.weebly.com/uploads/1/3/1/6/131606875/4e7713.pdfIn PDF document text
    • https://xusawoji.weebly.com/uploads/1/3/0/7/130739635/689ca099.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6349/1222/files/guernsey_county_sheriffs_office_inmates.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/0923/3063/files/varoxovibesu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9015/7474/files/72886730844.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/6992/6295/files/lifecell_skin_care_reviews_2018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/3432/8219/files/constitution_act_1982_canada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8399/8407/files/jumemudasidagif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8158/1209/files/brewers_ticket_office_hours.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0506/7161/6187/files/apental_calc_2020_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b5a0b41-5d85-4b4e-ad7f-82ee062f690e/9244965370.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3f558d0-2d03-4d3c-ab99-74743b2cf97d/vipopizefotaponasanorivar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/518e3ce5-2f95-4f00-ae05-1224f9de1a7b/77953328575.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79514ca1-6ae2-4f37-856d-f439ac6510fb/taforizeburimexuxamujewi.pdfIn 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off0000c80b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xC80B 29076 bytes
SHA-256: dc31ec2579896ec6b615ecacfa7cfb8e643191c56ac5cb8087ceb6287d2443fd
font_00_sfnt_off00008753.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8753 5480 bytes
SHA-256: 5d0f97c051d054ed9644530daf916128db1e20e54eb7f8000679dcc693128a2f
font_01_sfnt_off000099d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99D1 1852 bytes
SHA-256: 30d16f7417f0add8d0285b648bbaf00e913f8a8b98029eef0ba4a775d80cd2e5
font_02_sfnt_off0000a2c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA2C3 11136 bytes
SHA-256: d50976ec2f3092acb2f8532e0c63b3476997d8b3860a2049a3b77e65ad8c3e73

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