Malicious PDF — malware analysis report

Static analysis result for SHA-256 30919ef59478ffd3…

MALICIOUS

PDF

79.9 KB Created: 2021-04-16 05:52:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 7a76e826be29046dad29b7745741618d SHA-1: 5644828b1c3559a4998b5c4bba24326f0cd40f34 SHA-256: 30919ef59478ffd33f261e1d655a88c724250a9b3c2c9fdd2725f4f088f6f6c7
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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 0.9993

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 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.
  • 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://soxebez.ru/strik?utm_term=how+to+read+music+for+drums+for+beginners PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4493876/normal_5ff0c8e05a1d3.pdfIn PDF document text
    • http://antonioit.space/interview_questions_for_managersglshq.pdfIn PDF document text
    • http://nipokaxa.getenjoyment.net/kuvuxoxevunilepoluzebalag.pdfIn PDF document text
    • http://sipidasurow.22web.org/juwoxopu.pdfIn PDF document text
    • https://cdn.sqhk.co/maxegugej/i0B8ZPB/no_man_s_sky_abyss_multiplayer_crack.pdfIn PDF document text
    • https://cdn.sqhk.co/tobijoge/m0YkKI4/samsung_j415f_flash_file_free.pdfIn PDF document text
    • http://sevelorovuwo.66ghz.com/piferolebak.pdfIn PDF document text
    • http://zikevamakag.mygamesonline.org/pdf_annotator_5_download.pdfIn PDF document text
    • http://kezijumedet.mypressonline.com/amar_singh_thapa.pdfIn PDF document text
    • http://copyright-infringement.business/pozuwbkkom.pdfIn PDF document text
    • https://cdn.sqhk.co/jotenitix/igPigk4/xipediwuvixofitaziru.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389805/normal_605af74e5a369.pdfIn PDF document text
    • http://dasukuged.22web.org/muzexoj.pdfIn PDF document text
    • https://cdn.sqhk.co/zoxowowi/hgjuM9x/munotosekuwa.pdfIn PDF document text
    • https://cdn.sqhk.co/wekaradukuve/LicLubJ/xepebegimububokigixaxiki.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489257/normal_6003c0f875bb4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466370/normal_5feb03a93eaa0.pdfIn PDF document text
    • http://bcpzonasegur4viabcp.com/new_blob_response._data_type_applicationtzrz8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://ad217471-f301-4d07-b05b-71cdb813ff8b.filesusr.com/ugd/4f915f_2fbc7c80c88a46bc87202cc101df2960.pdf?index=trueIn PDF document text
    • https://8eb76a5b-4a21-49bf-8e6b-a751f65a437c.filesusr.com/ugd/26938b_746eaacc317644698a0fe3c06599c0cf.pdf?index=trueIn PDF document text
    • http://wudafozejuniv.rf.gd/ninupurijanuwavowozunag.pdfIn PDF document text
    • https://98cdd5c5-c43e-49eb-9373-39517e896cbb.filesusr.com/ugd/90661f_b53b93ae98b74183bd7529d77257e6dc.pdf?index=trueIn PDF document text
    • http://gopogawamo.rf.gd/tivuw.pdfIn PDF document text
    • https://2cc935b2-b854-4d3d-8499-e3bac5ec7384.filesusr.com/ugd/2e82fc_4ac3a157babe4bba9059be68054c18ee.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fa5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA5C 5504 bytes
SHA-256: 27308b54880d7b335317e657fc618d983ee914a3d09357410c358dcd5560ecaf
font_01_sfnt_off00010d0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D0C 10784 bytes
SHA-256: a73aed360d6b776aef0cb97684d37df2079eaa9a5ce3613089e179cdc84e7622

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