Malicious PDF — malware analysis report

Static analysis result for SHA-256 24eb7eada3386282…

MALICIOUS

PDF

119.5 KB Created: 2021-03-21 06:45:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 006e16cd6578f54c1638d5ee9643131f SHA-1: 94f3603792cf0de9fbf17e669b97337574b697c2 SHA-256: 24eb7eada33862827b2aa1f29d70d807265c4e83d60da6a1e50b0b558e767889
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://mezovuduw.ru/strik?utm_term=does+costco+sell+vacuums PDF link annotation
    • https://ribovaboj.weebly.com/uploads/1/3/0/7/130775049/pogajakadusirorukim.pdfIn PDF document text
    • https://turabebusaweni.weebly.com/uploads/1/3/1/4/131438207/vatujokiluta.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380543/normal_60318a90219c0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457849/normal_5ff7628a461b8.pdfIn PDF document text
    • https://xulibaro.weebly.com/uploads/1/3/4/0/134041525/dded60.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374520/normal_5feb19585c0ab.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450511/normal_5fe4ef9d14473.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/5fdb6068-d004-4193-b50f-57afcfcb4b80/ncert_grade_10_english_textbook.pdfIn PDF document text
    • https://s3.amazonaws.com/retisovojor/annona_muricata_antioxidant.pdfIn PDF document text
    • https://36425c1f-c329-48aa-845d-1f8252cb45c8.filesusr.com/ugd/01d500_1d2ca6d975294a3f98d5b42f040bb87b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/megujobemegor/score_s_business_plan_template_for_startups.pdfIn PDF document text
    • https://s3.amazonaws.com/fidefofudi/snapper_snowblower_belt_replacement.pdfIn PDF document text
    • https://s3.amazonaws.com/towutoginadivu/60217862698.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubatebedoxez/60168660609.pdfIn PDF document text
    • https://s3.amazonaws.com/dipafuxe/fujaladapatix.pdfIn PDF document text
    • https://s3.amazonaws.com/jesidofefe/best_ballroom_dance_music_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/067504b1-778e-4805-b897-ebec78146b41/pikatawu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/abce2838-b60b-4417-b6b3-ab9005df4e14/rafagoninevimukomunudefi.pdfIn PDF document text
    • https://387a498e-9551-4239-9507-3183ba214552.filesusr.com/ugd/cd403b_befa6eba0a8e4b9e9550c9c8a393c5de.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/8327d0c2-339a-4382-967a-ce68497e6775/kaplan_new_sat_practice_test_1_answers.pdfIn PDF document text
    • https://f4ef19d8-372f-49db-bbb6-0f5e16bfa625.filesusr.com/ugd/070799_1eb1655c47ec43839a6372d6de788629.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fokapikow/pakon.pdfIn PDF document text
    • https://s3.amazonaws.com/kawotexulozax/79007118112.pdfIn PDF document text
    • https://s3.amazonaws.com/mijumomub/doxaginamoremiguf.pdfIn PDF document text
    • https://238a82c5-85a8-4641-a991-2f0f5270ddc4.filesusr.com/ugd/63f22d_9b6393e06afa4c569f8a5c820bd4cf75.pdf?index=trueIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fabc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFABC 44316 bytes
SHA-256: 90ca6ac33857432b630c953270765a18d11f19ef333b9c234a9093483325f9e6
font_01_sfnt_off00017ec3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17EC3 4908 bytes
SHA-256: 0d3f5273393ad11d8c077a281d1c3657d119f2aaeac131f826ea6d286905148e
font_02_sfnt_off00018f77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18F77 13260 bytes
SHA-256: fb8aedd5f9c14b5e41803aaa40e489b397e5f1052e0f236c000da0617a82ec96
font_03_sfnt_off0001bb8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BB8C 16120 bytes
SHA-256: cf1f5adb226054e61b48b869043dcbfeac2ed8a78db67378db5d542e5772dc50